http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220 degrees. Secondly, I always find my cats looking straight at me or whatever they want to examine, they don't seem to be able to see sideways, and the other day I walked over to one cat, I was 90 degrees from his forward direction, and he didn't see me until I touched him to stroke him, which scared the hell out of him.

What are your experiences of cats vision (and your own)?

--
A Catholic boy in confession says, €œBless me Father, I have sinned, I masturbated while thinking about my sister.€�
€œThat's a disgrace,€� said the priest, €œespecially when you have two gorgeous younger brothers.€�

Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared
to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220
degrees.

Yeah, mine is much wider than most peoples' too.

Secondly, I always find my cats looking straight at me or whatever they
want to examine, they don't seem to be able to see sideways,

That's a different question. I look directly at what
I want to focus on, but that doesnt mean that I
dont notice movement out of the corner of my eyes.

and the other day I walked over to one cat, I was 90 degrees from his
forward direction, and he didn't see me until I touched him to stroke him,
which scared the hell out of him.

Yeah, that's a much better test of that field of vision question.

Bur its likely that some cats have a form of tunnel
vision too. We know that young kids to, that's why
they can get run over when crossing the road.

What are your experiences of cats vision

I dont remember actually testing that with any of the cats
I had and I dont currently have any cats that I can test.

(and your own)?

Like I said, mine is much wider than most people.

I used to get an effect where I could get false vision
out of the corner of my eye when very short of sleep,
think I see movement but when I turn to check there
isnt any movement there. Dont get that effect anymore.

On Mon, 25 Apr 2016 20:55:37 +0100, Rod Speed wrote:

Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared
to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220
degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd? No wonder people don't see people coming when they drive.

Secondly, I always find my cats looking straight at me or whatever they
want to examine, they don't seem to be able to see sideways,

That's a different question. I look directly at what
I want to focus on, but that doesnt mean that I
dont notice movement out of the corner of my eyes.

But I don't find myself staring continuously at the cat. Once I've examined it, I don't need to keep watching it if it's not doing anything.

and the other day I walked over to one cat, I was 90 degrees from his
forward direction, and he didn't see me until I touched him to stroke him,
which scared the hell out of him.

Yeah, that's a much better test of that field of vision question.

Bur its likely that some cats have a form of tunnel
vision too. We know that young kids to, that's why
they can get run over when crossing the road.

I don't believe you. They have the same vision, they just don't pay attention and are preoccupied with things they consider more important. I remember us testing our eyesight in primary school for a game/lesson, and it was similar then.

What are your experiences of cats vision

I dont remember actually testing that with any of the cats
I had and I dont currently have any cats that I can test.

Not easy to persuade a cat to look at something else while you're doing something interesting. I guess if one person distracted it maybe, but then you wouldn't know if it saw the second person to the side. You'd need something it wanted to look at, then something even more exciting than that like it's favourite treat.

(and your own)?

Like I said, mine is much wider than most people.

I used to get an effect where I could get false vision
out of the corner of my eye when very short of sleep,
think I see movement but when I turn to check there
isnt any movement there. Dont get that effect anymore.

I've never experienced that.

--
My son was thrown out of school today for letting a girl in his class give him a hand-job. I said "Son, that's 3 schools this year! You'd better stop before you're banned from teaching altogether."

Mr Macaw wrote:
http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180 degrees in humans"
I disagree with this. Firstly, I tested my own vision and I have 220
degrees. Secondly, I always find my cats looking straight at me or
whatever they want to examine, they don't seem to be able to see
sideways, and the other day I walked over to one cat, I was 90
degrees from his forward direction, and he didn't see me until I
touched him to stroke him, which scared the hell out of him.
What are your experiences of cats vision (and your own)?

This is a DIY group.
Get a woman, a job and a life Peter.
When is the last time you had a shag?

"Mr Pounder Esquire" wrote in message ...

Mr Macaw wrote:
http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180 degrees in humans"
I disagree with this. Firstly, I tested my own vision and I have 220
degrees. Secondly, I always find my cats looking straight at me or
whatever they want to examine, they don't seem to be able to see
sideways, and the other day I walked over to one cat, I was 90
degrees from his forward direction, and he didn't see me until I
touched him to stroke him, which scared the hell out of him.
What are your experiences of cats vision (and your own)?

This is a DIY group.
Get a woman, a job and a life Peter.
When is the last time you had a shag?

You might get lucky with a pickup line like that.
If so, don't post the video.

Richard wrote:
"Mr Pounder Esquire" wrote in message
...

Mr Macaw wrote:
http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180 degrees in humans"
I disagree with this. Firstly, I tested my own vision and I have
220 degrees. Secondly, I always find my cats looking straight at
me or whatever they want to examine, they don't seem to be able to
see sideways, and the other day I walked over to one cat, I was 90
degrees from his forward direction, and he didn't see me until I
touched him to stroke him, which scared the hell out of him.
What are your experiences of cats vision (and your own)?

This is a DIY group.
Get a woman, a job and a life Peter.
When is the last time you had a shag?

You might get lucky with a pickup line like that.
If so, don't post the video.

I have never needed luck.

Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared
to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220
degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.

No wonder people don't see people coming when they drive.

You dont need 220 degrees to do that.

You dont even need 180 degrees.

Secondly, I always find my cats looking straight at me or whatever they
want to examine, they don't seem to be able to see sideways,

That's a different question. I look directly at what
I want to focus on, but that doesnt mean that I
dont notice movement out of the corner of my eyes.

But I don't find myself staring continuously at the cat.

That may just be an evolutionary thing, works
better when catching rodents and insects etc.

Once I've examined it, I don't need to keep watching it if it's not doing
anything.

These cats dont do that.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

and the other day I walked over to one cat, I was 90 degrees from his
forward direction, and he didn't see me until I touched him to stroke
him, which scared the hell out of him.

Yeah, that's a much better test of that field of vision question.

Bur its likely that some cats have a form of tunnel
vision too. We know that young kids to, that's why
they can get run over when crossing the road.

I don't believe you.

Doesnt matter what you believe, that's been established
with rigorous science for a long time now. Trivial to test.

They have the same vision, they just don't pay attention and are
preoccupied with things they consider more important.

Wrong.

I remember us testing our eyesight in primary school for a game/lesson,
and it was similar then.

Then you didnt do it properly then.

What are your experiences of cats vision

I dont remember actually testing that with any of the cats
I had and I dont currently have any cats that I can test.

Not easy to persuade a cat to look at something else while you're doing
something interesting.

These cats didnt need any persuading.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

I guess if one person distracted it maybe, but then you wouldn't know if
it saw the second person to the side. You'd need something it wanted to
look at, then something even more exciting than that like it's favourite
treat.

With the neighbours' cats that love my jungle, they
normally dont look at me when I show up, they
mostly look where they are going while leaving.

(and your own)?

Like I said, mine is much wider than most people.

I used to get an effect where I could get false vision
out of the corner of my eye when very short of sleep,
think I see movement but when I turn to check there
isnt any movement there. Dont get that effect anymore.

I've never experienced that.

Yeah, never came across anyone else who did either,
although I dont mention it very often at all.

"Mr Pounder Esquire" wrote in message ...

Richard wrote:
"Mr Pounder Esquire" wrote in message
...

Mr Macaw wrote:
http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180 degrees in humans"
I disagree with this. Firstly, I tested my own vision and I have
220 degrees. Secondly, I always find my cats looking straight at
me or whatever they want to examine, they don't seem to be able to
see sideways, and the other day I walked over to one cat, I was 90
degrees from his forward direction, and he didn't see me until I
touched him to stroke him, which scared the hell out of him.
What are your experiences of cats vision (and your own)?

This is a DIY group.
Get a woman, a job and a life Peter.
When is the last time you had a shag?

You might get lucky with a pickup line like that.
If so, don't post the video.

I have never needed luck.

Nice to know. Hope you and Peter have a fun time.

"Mr Pounder Esquire" wrote in message
...
Richard wrote:
"Mr Pounder Esquire" wrote in message
...

Mr Macaw wrote:
http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180 degrees in humans"
I disagree with this. Firstly, I tested my own vision and I have
220 degrees. Secondly, I always find my cats looking straight at
me or whatever they want to examine, they don't seem to be able to
see sideways, and the other day I walked over to one cat, I was 90
degrees from his forward direction, and he didn't see me until I
touched him to stroke him, which scared the hell out of him.
What are your experiences of cats vision (and your own)?

This is a DIY group.
Get a woman, a job and a life Peter.
When is the last time you had a shag?

You might get lucky with a pickup line like that.
If so, don't post the video.

I have never needed luck.


However pig ignorance and a bit a racism seems to have served you well.

Not to mention the Pound Shop where you can work out the change from a pound
coin when buying an item.

--
Adam

On Mon, 25 Apr 2016 21:37:40 +0100, Rod Speed wrote:

Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared
to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220
degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.

I seem to remember my classmates when I was at school were all quite similar.

No wonder people don't see people coming when they drive.

You dont need 220 degrees to do that.

You dont even need 180 degrees.

If you don't have 180 degrees, you have to turn your head or move your eyes all the time. With 220 degrees, you see people to the side of your that you aren't looking for, and you can effectively look both ways at once at a junction.

Secondly, I always find my cats looking straight at me or whatever they
want to examine, they don't seem to be able to see sideways,

That's a different question. I look directly at what
I want to focus on, but that doesnt mean that I
dont notice movement out of the corner of my eyes.

But I don't find myself staring continuously at the cat.

That may just be an evolutionary thing, works
better when catching rodents and insects etc.

It wasn't trying to eat me.

Once I've examined it, I don't need to keep watching it if it's not doing
anything.

These cats dont do that.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

They're either staring at each other or the camera.

and the other day I walked over to one cat, I was 90 degrees from his
forward direction, and he didn't see me until I touched him to stroke
him, which scared the hell out of him.

Yeah, that's a much better test of that field of vision question.

Bur its likely that some cats have a form of tunnel
vision too. We know that young kids to, that's why
they can get run over when crossing the road.

I don't believe you.

Doesnt matter what you believe, that's been established
with rigorous science for a long time now. Trivial to test.

Utter bull****.

"Newborn babies have peripheral vision" - http://www.aao.org/eye-health/tips-p...on-development

"Overall there was little evidence to support the hypothesis that children have poorer peripheral vision than adults relative to their foveal vision." - http://www.ncbi.nlm.nih.gov/pubmed/3801789

"Generally, if a baby is not tracking motion across their full range of vision by 3 months of age, parents should consult their pediatrician." - http://everydaylife.globalpost.com/p...ers-44127.html

Basically kids that don't use their peripheral vision are just plain stupid. Their eyes work as well as ours.

They have the same vision, they just don't pay attention and are
preoccupied with things they consider more important.

Wrong.

I've been a child, I remember being able to see sideways.

I remember us testing our eyesight in primary school for a game/lesson,
and it was similar then.

Then you didnt do it properly then.

Yes we did.

What are your experiences of cats vision

I dont remember actually testing that with any of the cats
I had and I dont currently have any cats that I can test.

Not easy to persuade a cat to look at something else while you're doing
something interesting.

These cats didnt need any persuading.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

I guess if one person distracted it maybe, but then you wouldn't know if
it saw the second person to the side. You'd need something it wanted to
look at, then something even more exciting than that like it's favourite
treat.

With the neighbours' cats that love my jungle, they
normally dont look at me when I show up, they
mostly look where they are going while leaving.

Is that because you've just yelled at them?

--
A minister gave a talk to the Lions Club on sex. When he got home, he couldn't tell his wife that he had spoken on sex, so he said he had discussed horseback riding with the members.
A few days later, she ran into some men at the shopping center and they complimented her on the speech her husband had made.
She said, "Yes, I heard. I was surprised about the subject matter, as he's only tried it twice. The first time he got so sore he could hardly walk, and the second time he fell off."

Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220
degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.

I seem to remember my classmates when I was at school were all quite
similar.

Either you stuffed that measurement
up or you're remembering it wrong.

No wonder people don't see people coming when they drive.

You dont need 220 degrees to do that.

You dont even need 180 degrees.

If you don't have 180 degrees, you have to turn your head or move your
eyes all the time.

Most do that when coming up to an intersection.

I do too.

With 220 degrees, you see people to the side of your that you aren't
looking for, and you can effectively look both ways at once at a junction.

I dont know anyone who doesnt move their head or their
eyes when coming up to an intersection, including me.

Secondly, I always find my cats looking straight at me or whatever
they want to examine, they don't seem to be able to see sideways,

That's a different question. I look directly at what
I want to focus on, but that doesnt mean that I
dont notice movement out of the corner of my eyes.

But I don't find myself staring continuously at the cat.

That may just be an evolutionary thing, works
better when catching rodents and insects etc.

It wasn't trying to eat me.

Sure, but that evolutionary behaviour may well apply to
anything it is concentrating on, not just what its about to
eat. You get the same thing with laser pointers or even
with something inedible on the end of a bit of string etc.

Once I've examined it, I don't need to keep watching it if it's not
doing anything.

These cats dont do that.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

They're either staring at each other or the camera.

They are looking at more than just those two things.

and the other day I walked over to one cat, I was 90 degrees from his
forward direction, and he didn't see me until I touched him to stroke
him, which scared the hell out of him.

Yeah, that's a much better test of that field of vision question.

Bur its likely that some cats have a form of tunnel
vision too. We know that young kids to, that's why
they can get run over when crossing the road.

I don't believe you.

Doesnt matter what you believe, that's been established
with rigorous science for a long time now. Trivial to test.

Utter bull****.

Fact.

"Newborn babies have peripheral vision" -
http://www.aao.org/eye-health/tips-p...on-development

Irrelevant to whether younger kids have a narrower field of view than when
they get older.

"Overall there was little evidence to support the hypothesis that children
have poorer peripheral vision than adults relative to their foveal
vision." - http://www.ncbi.nlm.nih.gov/pubmed/3801789

Pity about the other studys that show they do have.

"Generally, if a baby

We aren't talking about babys.

is not tracking motion across their full range of vision by 3 months of
age, parents should consult their pediatrician."

That has nothing to do with why kids get run over.

- http://everydaylife.globalpost.com/p...ers-44127.html

Basically kids that don't use their peripheral vision are just plain
stupid. Their eyes work as well as ours.

Wrong with peripheral vision.

They have the same vision, they just don't pay attention and are
preoccupied with things they consider more important.

Wrong.

I've been a child, I remember being able to see sideways.

Doesnt mean that you always had the same
amount of peripheral vision when a young child.

I remember us testing our eyesight in primary school for a game/lesson,
and it was similar then.

Then you didnt do it properly then.

Yes we did.

You clearly didnt if you concluded that all kids
have the same peripheral vision. They dont.

What are your experiences of cats vision

I dont remember actually testing that with any of the cats
I had and I dont currently have any cats that I can test.

Not easy to persuade a cat to look at something else while you're doing
something interesting.

These cats didnt need any persuading.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

I guess if one person distracted it maybe, but then you wouldn't know if
it saw the second person to the side. You'd need something it wanted to
look at, then something even more exciting than that like it's favourite
treat.

With the neighbours' cats that love my jungle, they
normally dont look at me when I show up, they
mostly look where they are going while leaving.

Is that because you've just yelled at them?

Nope, I never yell at them in that situation.

The only cat I yell at is the ****er that insists on doing
a flying leap from the ground onto half way up my
****ing fly screen and then hanging onto the ****ing
fly screen with its claws in summer when its trying to
catch the moths.

"Rod Speed" wrote in message
...
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared to 180
degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220 degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.


Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span


michael adams

....

michael adams a écrit :
Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

My own test on myself, suggests mine is much wider than that close to
200 degrees. Raise a finger of each hand concentrate on the PC screen,
move the hands back at either side of the head, until the fingers
disappear from view - 200 degrees.

On Mon, 25 Apr 2016 22:54:09 +0100, Harry Bloomfield wrote:

michael adams a écrit :
Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

My own test on myself, suggests mine is much wider than that close to
200 degrees. Raise a finger of each hand concentrate on the PC screen,
move the hands back at either side of the head, until the fingers
disappear from view - 200 degrees.

I'd say that was about right. (mine is about 140 degrees of course)

Harry Bloomfield wrote
michael adams wrote

Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

That is one of the more superficial wikipedia articles.

My own test on myself, suggests mine is much wider than that close to 200
degrees. Raise a finger of each hand concentrate on the PC screen, move
the hands back at either side of the head, until the fingers disappear
from view - 200 degrees.

Yeah, mine is something like that too. Much more than 120.

On Mon, 25 Apr 2016 22:48:10 +0100, michael adams wrote:


"Rod Speed" wrote in message
...
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared to 180
degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220 degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.


Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

Wow, I've never seen Wikipedia be so absolutely and preposterously wrong. If I had only 120 degrees of vision, I'd be going to see a doctor immediately before I got run over by a bus!

Try this yourself, look directly forwards at the centre of your computer screen. What is the furthest round you can see an object? You must be able to see things directly to your left, everybody can. If you can't see things that far round, you'd be having accidents all the time. You'd crash your car, you'd get run over, etc, etc.

--
I went to buy some camoflage trousers the other day but I couldn't find any.

On Mon, 25 Apr 2016 22:56:22 +0100, Bob Eager wrote:

On Mon, 25 Apr 2016 22:54:09 +0100, Harry Bloomfield wrote:

michael adams a écrit :
Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

My own test on myself, suggests mine is much wider than that close to
200 degrees. Raise a finger of each hand concentrate on the PC screen,
move the hands back at either side of the head, until the fingers
disappear from view - 200 degrees.

I'd say that was about right. (mine is about 140 degrees of course)

You can't see directly to one side when looking straight ahead?

--
China has outlawed sexual harassment.
This will make work conditions much more bearable during those 16 hour days at the sweat shop.

On Mon, 25 Apr 2016 23:00:22 +0100, Rod Speed wrote:

Harry Bloomfield wrote
michael adams wrote

Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

That is one of the more superficial wikipedia articles.

My own test on myself, suggests mine is much wider than that close to 200
degrees. Raise a finger of each hand concentrate on the PC screen, move
the hands back at either side of the head, until the fingers disappear
from view - 200 degrees.

Yeah, mine is something like that too. Much more than 120.

I don't believe anyone has 120 who doesn't have a severe eye defect. In fact I'd say 120 degrees is "tunnel vision" which means you are not allowed to drive a car.

--
According to a British medical journal, men reduce their chances of having a fatal heart attack by [about] 36% if they have at least 100 orgasms a year.

On Mon, 25 Apr 2016 22:48:10 +0100, michael adams wrote:


"Rod Speed" wrote in message
...
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared to 180
degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220 degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.


Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

Wikipedia contradicts itself in another article:
_________________
Field of view:

The approximate field of view of an individual human eye (measured from the fixation point, i.e., the point at which one's gaze is directed) is 60° superior (up), 60° nasal (towards the nose), 70-75° inferior (down), and 100-110° temporal (away from the nose and towards the temple).

****For both eyes the combined visual field is 130-135° vertical and 200° horizontal.****
_________________

So 200, not 120.

--
I went to buy some camoflage trousers the other day but I couldn't find any.

On Mon, 25 Apr 2016 22:41:53 +0100, Rod Speed wrote:

Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220
degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.

I seem to remember my classmates when I was at school were all quite
similar.

Either you stuffed that measurement
up

Simple experiment. A hula hoop around your head, with a coloured bead slid slowly round it, while you stare straight ahead. You shout out the colour when you see it.

or you're remembering it wrong.

I wouldn't forget that it was just over right angles.

No wonder people don't see people coming when they drive.

You dont need 220 degrees to do that.

You dont even need 180 degrees.

If you don't have 180 degrees, you have to turn your head or move your
eyes all the time.

Most do that when coming up to an intersection.

I do too.

Yes, but peripheral vision means you see things you weren't looking for.

With 220 degrees, you see people to the side of your that you aren't
looking for, and you can effectively look both ways at once at a junction.

I dont know anyone who doesnt move their head or their
eyes when coming up to an intersection, including me.

Because you get better vision with the central part. Peripheral vision will tell you something is moving, but probably not how fast and what direction.

Secondly, I always find my cats looking straight at me or whatever
they want to examine, they don't seem to be able to see sideways,

That's a different question. I look directly at what
I want to focus on, but that doesnt mean that I
dont notice movement out of the corner of my eyes.

But I don't find myself staring continuously at the cat.

That may just be an evolutionary thing, works
better when catching rodents and insects etc.

It wasn't trying to eat me.

Sure, but that evolutionary behaviour may well apply to
anything it is concentrating on, not just what its about to
eat. You get the same thing with laser pointers or even
with something inedible on the end of a bit of string etc.

One of my cats does it forever. The rest will look away if I stare back for more than 5 seconds.

Once I've examined it, I don't need to keep watching it if it's not
doing anything.

These cats dont do that.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

They're either staring at each other or the camera.

They are looking at more than just those two things.

I only flipped through it quickly, but I only saw two things.

and the other day I walked over to one cat, I was 90 degrees from his
forward direction, and he didn't see me until I touched him to stroke
him, which scared the hell out of him.

Yeah, that's a much better test of that field of vision question.

Bur its likely that some cats have a form of tunnel
vision too. We know that young kids to, that's why
they can get run over when crossing the road.

I don't believe you.

Doesnt matter what you believe, that's been established
with rigorous science for a long time now. Trivial to test.

Utter bull****.

Fact.

"Newborn babies have peripheral vision" -
http://www.aao.org/eye-health/tips-p...on-development

Irrelevant to whether younger kids have a narrower field of view than when
they get older.

"Overall there was little evidence to support the hypothesis that children
have poorer peripheral vision than adults relative to their foveal
vision." - http://www.ncbi.nlm.nih.gov/pubmed/3801789

Pity about the other studys that show they do have.

"Generally, if a baby

We aren't talking about babys.

is not tracking motion across their full range of vision by 3 months of
age, parents should consult their pediatrician."

That has nothing to do with why kids get run over.

- http://everydaylife.globalpost.com/p...rs-44127..html

Basically kids that don't use their peripheral vision are just plain
stupid. Their eyes work as well as ours.

Wrong with peripheral vision.

From personal experience of myself and school chums, it's the same in kids as adults. And the links I read show it's more a lack on concentration than sight.

They have the same vision, they just don't pay attention and are
preoccupied with things they consider more important.

Wrong.

I've been a child, I remember being able to see sideways.

Doesnt mean that you always had the same
amount of peripheral vision when a young child.

Yip, it was measured.

I remember us testing our eyesight in primary school for a game/lesson,
and it was similar then.

Then you didnt do it properly then.

Yes we did.

You clearly didnt if you concluded that all kids
have the same peripheral vision. They dont.

Similar. To within about 20 degrees per side. Everybody saw 180, some more.

What are your experiences of cats vision

I dont remember actually testing that with any of the cats
I had and I dont currently have any cats that I can test.

Not easy to persuade a cat to look at something else while you're doing
something interesting.

These cats didnt need any persuading.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

I guess if one person distracted it maybe, but then you wouldn't know if
it saw the second person to the side. You'd need something it wanted to
look at, then something even more exciting than that like it's favourite
treat.

With the neighbours' cats that love my jungle, they
normally dont look at me when I show up, they
mostly look where they are going while leaving.

Is that because you've just yelled at them?

Nope, I never yell at them in that situation.

The only cat I yell at is the ****er that insists on doing
a flying leap from the ground onto half way up my
****ing fly screen and then hanging onto the ****ing
fly screen with its claws in summer when its trying to
catch the moths.

Electrify the sunscreen. Unless you like the moths. Mind you if you separated the high and low voltages enough, only a large animal like a cat would get a shock.

--
Sex drive: a physical craving that begins in adolescence and ends at marriage.

"Mr Macaw" wrote in message news
On Mon, 25 Apr 2016 23:00:22 +0100, Rod Speed
wrote:

Harry Bloomfield wrote
michael adams wrote

Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

That is one of the more superficial wikipedia articles.

My own test on myself, suggests mine is much wider than that close to
200
degrees. Raise a finger of each hand concentrate on the PC screen, move
the hands back at either side of the head, until the fingers disappear
from view - 200 degrees.

Yeah, mine is something like that too. Much more than 120.

I don't believe anyone has 120 who doesn't have a severe eye defect.

Looks like we are using different measures, one and two eyes.
https://en.wikipedia.org/wiki/Peripheral_vision

In fact I'd say 120 degrees is "tunnel vision" which means you are not
allowed to drive a car.

"Mr Macaw" wrote in message news
On Mon, 25 Apr 2016 22:48:10 +0100, michael adams
wrote:


"Rod Speed" wrote in message
...
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180
degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have
220 degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.


Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

Wikipedia contradicts itself in another article:

No, the difference is whether you are talking about one or two eyes.
_________________
Field of view:

The approximate field of view of an individual human eye (measured from
the fixation point, i.e., the point at which one's gaze is directed) is
60° superior (up), 60° nasal (towards the nose), 70-75° inferior (down),
and 100-110° temporal (away from the nose and towards the temple).

****For both eyes the combined visual field is 130-135° vertical and 200°
horizontal.****
_________________

So 200, not 120.

Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have
220 degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.

I seem to remember my classmates when I was at school were all quite
similar.

Either you stuffed that measurement up

Simple experiment.

Yes, but you must have either stuffed that up or have
fluked a very unusual group if everyone had the same
peripheral vision or you are remembering that wrong.

A hula hoop around your head, with a coloured bead slid slowly round it,
while you stare straight ahead. You shout out the colour when you see it.

or you're remembering it wrong.

I wouldn't forget that it was just over right angles.

That one is just a different measure, one eye or both eyes.

No wonder people don't see people coming when they drive.

You dont need 220 degrees to do that.

You dont even need 180 degrees.

If you don't have 180 degrees, you have to turn your head or move your
eyes all the time.

Most do that when coming up to an intersection.

I do too.

Yes, but peripheral vision means you see things you weren't looking for.

Yes, but most do look for oncoming cars.

With 220 degrees, you see people to the side of your that you aren't
looking for, and you can effectively look both ways at once at a
junction.

I dont know anyone who doesnt move their head or their
eyes when coming up to an intersection, including me.

Because you get better vision with the central part.

Yes.

Peripheral vision will tell you something is moving, but probably not how
fast and what direction.

And wont necessarily distinguish between say
a bike and a small tree or something like that
which will be moving in your field of vision
just because your car is moving as you drive up.

The glassblower at work would always know
when you talked up behind them, but that
was because of your reflection in their glasses.

Secondly, I always find my cats looking straight at me or whatever
they want to examine, they don't seem to be able to see sideways,

That's a different question. I look directly at what
I want to focus on, but that doesnt mean that I
dont notice movement out of the corner of my eyes.

But I don't find myself staring continuously at the cat.

That may just be an evolutionary thing, works
better when catching rodents and insects etc.

It wasn't trying to eat me.

Sure, but that evolutionary behaviour may well apply to
anything it is concentrating on, not just what its about to
eat. You get the same thing with laser pointers or even
with something inedible on the end of a bit of string etc.

One of my cats does it forever. The rest will look away if I stare back
for more than 5 seconds.

That's because of your rabid blood shot eyes and the flecks of
foam about the lips and you howling at the top of your voice.
They are deciding whether to run or just hope for the best.

Once I've examined it, I don't need to keep watching it if it's not
doing anything.

These cats dont do that.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

They're either staring at each other or the camera.

They are looking at more than just those two things.

I only flipped through it quickly, but I only saw two things.

and the other day I walked over to one cat, I was 90 degrees from
his forward direction, and he didn't see me until I touched him to
stroke him, which scared the hell out of him.

Yeah, that's a much better test of that field of vision question.

Bur its likely that some cats have a form of tunnel
vision too. We know that young kids to, that's why
they can get run over when crossing the road.

I don't believe you.

Doesnt matter what you believe, that's been established
with rigorous science for a long time now. Trivial to test.

Utter bull****.

Fact.

"Newborn babies have peripheral vision" -
http://www.aao.org/eye-health/tips-p...on-development

Irrelevant to whether younger kids have a narrower field of view than
when they get older.

"Overall there was little evidence to support the hypothesis that
children
have poorer peripheral vision than adults relative to their foveal
vision." - http://www.ncbi.nlm.nih.gov/pubmed/3801789

Pity about the other studys that show they do have.

"Generally, if a baby

We aren't talking about babys.

is not tracking motion across their full range of vision by 3 months of
age, parents should consult their pediatrician."

That has nothing to do with why kids get run over.

-
http://everydaylife.globalpost.com/p...ers-44127.html

Basically kids that don't use their peripheral vision are just plain
stupid. Their eyes work as well as ours.

Wrong with peripheral vision.

From personal experience of myself and school chums, it's the same in kids
as adults.

That's nothing like a rigorous scientific measurement
of peripheral vision in kids and adults. That's been done.

And the links I read show it's more a lack on concentration than sight.

Easy to test that possibility.

They have the same vision, they just don't pay attention and are
preoccupied with things they consider more important.

Wrong.

I've been a child, I remember being able to see sideways.

Doesnt mean that you always had the same
amount of peripheral vision when a young child.

Yip,

Nope.

it was measured.

It wasnt measure then and now and the results compared.

I remember us testing our eyesight in primary school for a
game/lesson, and it was similar then.

Then you didnt do it properly then.

Yes we did.

You clearly didnt if you concluded that all kids
have the same peripheral vision. They dont.

Similar. To within about 20 degrees per side. Everybody saw 180, some
more.

That nothing like what you previously said.

What are your experiences of cats vision

I dont remember actually testing that with any of the cats
I had and I dont currently have any cats that I can test.

Not easy to persuade a cat to look at something else while you're
doing something interesting.

These cats didnt need any persuading.
https://www.youtube.com/watch?v=KIeP...ature=youtu.be

I guess if one person distracted it maybe, but then you wouldn't know
if it saw the second person to the side. You'd need something it
wanted to look at, then something even more exciting than that like
it's favourite treat.

With the neighbours' cats that love my jungle, they
normally dont look at me when I show up, they
mostly look where they are going while leaving.

Is that because you've just yelled at them?

Nope, I never yell at them in that situation.

The only cat I yell at is the ****er that insists on doing
a flying leap from the ground onto half way up my
****ing fly screen and then hanging onto the ****ing
fly screen with its claws in summer when its trying to
catch the moths.

Electrify the sunscreen.

Not possible, its plastic, not metal.

And nothing would happen even if it was metal.

Unless you like the moths.

It would have no effect on the moths.

Mind you if you separated the high and low voltages enough, only a large
animal like a cat would get a shock.

I just shout at the cat and it ****s off.

It very much depends on the cat or person.

Cats get cateracts and some conditions make the side vision worse which is
probably why they get run over.

Brian

--
----- -
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please!
"Mr Macaw" wrote in message news http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared to
180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220
degrees. Secondly, I always find my cats looking straight at me or whatever
they want to examine, they don't seem to be able to see sideways, and the
other day I walked over to one cat, I was 90 degrees from his forward
direction, and he didn't see me until I touched him to stroke him, which
scared the hell out of him.

What are your experiences of cats vision (and your own)?

--
A Catholic boy in confession says, "Bless me Father, I have sinned, I
masturbated while thinking about my sister."
"That's a disgrace," said the priest, "especially when you have two gorgeous
younger brothers."

On 26/04/2016 00:21, Mr Macaw wrote:

Simple experiment. A hula hoop around your head, with a coloured bead
slid slowly round it, while you stare straight ahead. You shout out the
colour when you see it.



That would be a couple of degrees then as rods don't detect colour only
cones do that and they are in the centre of your field of view.
Any colour you see in the peripheral field is just made up by your brain.

In message . com,
lid writes
On 26/04/2016 00:21, Mr Macaw wrote:

Simple experiment. A hula hoop around your head, with a coloured bead
slid slowly round it, while you stare straight ahead. You shout out the
colour when you see it.



That would be a couple of degrees then as rods don't detect colour only
cones do that and they are in the centre of your field of view.
Any colour you see in the peripheral field is just made up by your brain.

Hmm. My brain has just made up the blue colour of a folder about 45deg.
off my direct line of sight!

I like to claim good peripheral vision but 200deg. is only *something
there* or movement.

--
Tim Lamb

On Tue, 26 Apr 2016 09:14:27 +0100, dennis@home wrote:

On 26/04/2016 00:21, Mr Macaw wrote:

Simple experiment. A hula hoop around your head, with a coloured bead
slid slowly round it, while you stare straight ahead. You shout out the
colour when you see it.

That would be a couple of degrees then as rods don't detect colour only
cones do that and they are in the centre of your field of view.
Any colour you see in the peripheral field is just made up by your brain.

Funny how my eyesight and everyone in the class worked with colour round there. The only thing you don't pick up colour with is very low light levels.

--
Golfer: "Please stop checking your watch all the time, caddy. It's distracting!"
Caddy: "This isn't a watch Sir, it's a compass!"

On Tue, 26 Apr 2016 09:55:10 +0100, Tim Lamb wrote:

In message . com,
lid writes
On 26/04/2016 00:21, Mr Macaw wrote:

Simple experiment. A hula hoop around your head, with a coloured bead
slid slowly round it, while you stare straight ahead. You shout out the
colour when you see it.

That would be a couple of degrees then as rods don't detect colour only
cones do that and they are in the centre of your field of view.
Any colour you see in the peripheral field is just made up by your brain.

Hmm. My brain has just made up the blue colour of a folder about 45deg.
off my direct line of sight!

I like to claim good peripheral vision but 200deg. is only *something
there* or movement.

Not with me, I just held up a variety of bottles of pop at just past right angles and could tell which colour was which (I picked them up randomly from behind my back so my brain couldn't "cheat"). I have to wonder where these "studies" get their bull**** from. I simply can't believe I have cones where others don't.

--
PNEUMONOULTRAMICROSCOPICSILICOVOLCANOCONIOSIS (45 letters, a lung disease caused by breathing in particles of siliceous volcanic dust) is the longest word in the English language, beating TETRAMETHYLDIAMINOBENZHYDRYLPHOSPHINOUS ACID, HEPATICOCHOLANGIOCHOLECYSTENTEROSTOMIES, FORMALDEHYDETETRAMETHYLAMIDOFLUORIMUM, and DIMETHYLAMIDOPHENYLDIMETHYLPYRAZOLONE.

This particular cat is about 15. I've never snuck up on the others unless they're sleeping.


On Tue, 26 Apr 2016 08:56:42 +0100, Brian Gaff wrote:

It very much depends on the cat or person.

Cats get cateracts and some conditions make the side vision worse which is
probably why they get run over.

Brian



--
"I can't find a cause for your illness," the doctor said. "Frankly, I think it's due to drinking."
"In that case," replied his blonde patient, "I'll come back when you're sober."

On Tue, 26 Apr 2016 02:37:55 +0100, Rod Speed wrote:



"Mr Macaw" wrote in message news
On Mon, 25 Apr 2016 22:48:10 +0100, michael adams
wrote:


"Rod Speed" wrote in message
...
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote
Rod Speed wrote
Mr Macaw wrote

http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as
compared to 180
degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have
220 degrees.

Yeah, mine is much wider than most peoples' too.

You mean my 220 degrees is odd?

Just that its unusual for humans.


Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

Wikipedia contradicts itself in another article:

No, the difference is whether you are talking about one or two eyes.

No, with one eye it says 100-110 degrees outwards and 60 degrees towards the nose. That makes 160-170 degrees.

Anyway, we were discussing sight, not sight with one eye shut. We were discussing how far round you can see an object when looking straight ahead.

_________________
Field of view:

The approximate field of view of an individual human eye (measured from
the fixation point, i.e., the point at which one's gaze is directed) is
60° superior (up), 60° nasal (towards the nose), 70-75° inferior (down),
and 100-110° temporal (away from the nose and towards the temple).

****For both eyes the combined visual field is 130-135° vertical and 200°
horizontal.****
_________________

So 200, not 120.




--
Bad command or file name! Go stand in the corner.

On Tue, 26 Apr 2016 02:36:32 +0100, Rod Speed wrote:



"Mr Macaw" wrote in message news
On Mon, 25 Apr 2016 23:00:22 +0100, Rod Speed
wrote:

Harry Bloomfield wrote
michael adams wrote

Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

That is one of the more superficial wikipedia articles.

My own test on myself, suggests mine is much wider than that close to
200
degrees. Raise a finger of each hand concentrate on the PC screen, move
the hands back at either side of the head, until the fingers disappear
from view - 200 degrees.

Yeah, mine is something like that too. Much more than 120.

I don't believe anyone has 120 who doesn't have a severe eye defect.

Looks like we are using different measures, one and two eyes.
https://en.wikipedia.org/wiki/Peripheral_vision

One eye is irrelevant to the topic in hand - how far to your right can you see when staring straight ahead. Both Wikipedia articles say it's just past right angles.

--
Coffee (n.), the person upon whom one coughs.

Brian Gaff wrote

It very much depends on the cat or person.

Cats get cateracts and some conditions make the side vision worse

Yep.

which is probably why they get run over.

Nope, that's mostly because the stupid buggers refuse to gallop
and just move their legs even faster as the car approaches.

"Mr Macaw" wrote in message
news http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared
to 180 degrees in humans"

I disagree with this. Firstly, I tested my own vision and I have 220
degrees. Secondly, I always find my cats looking straight at me or
whatever they want to examine, they don't seem to be able to see sideways,
and the other day I walked over to one cat, I was 90 degrees from his
forward direction, and he didn't see me until I touched him to stroke him,
which scared the hell out of him.

What are your experiences of cats vision (and your own)?

--
A Catholic boy in confession says, "Bless me Father, I have sinned, I
masturbated while thinking about my sister."
"That's a disgrace," said the priest, "especially when you have two
gorgeous younger brothers."

"Mr Macaw" wrote in message news
On Tue, 26 Apr 2016 02:36:32 +0100, Rod Speed
wrote:



"Mr Macaw" wrote in message
news
On Mon, 25 Apr 2016 23:00:22 +0100, Rod Speed
wrote:

Harry Bloomfield wrote
michael adams wrote

Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees
of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

That is one of the more superficial wikipedia articles.

My own test on myself, suggests mine is much wider than that close to
200
degrees. Raise a finger of each hand concentrate on the PC screen,
move
the hands back at either side of the head, until the fingers disappear
from view - 200 degrees.

Yeah, mine is something like that too. Much more than 120.

I don't believe anyone has 120 who doesn't have a severe eye defect.

Looks like we are using different measures, one and two eyes.
https://en.wikipedia.org/wiki/Peripheral_vision

One eye is irrelevant to the topic in hand - how far to your right can you
see when staring straight ahead.

Yes, but it makes a big difference to the total you say.

Both Wikipedia articles say it's just past right angles.

Which isnt all that different to the 200 Harry said he has.

On Tue, 26 Apr 2016 10:27:55 +0100, Rod Speed wrote:

Brian Gaff wrote

It very much depends on the cat or person.

Cats get cateracts and some conditions make the side vision worse

Yep.

which is probably why they get run over.

Nope, that's mostly because the stupid buggers refuse to gallop
and just move their legs even faster as the car approaches.

Mine move very quickly when my car engine starts. But then they've seen the speed I reverse.

--
Amanpreet was overheard at the hospital angrily say, "My wife just delivered twins!!!"
A passerby said, "So? You should be happy about that. Why are you so angry?"
"I want to know who the son of a bitch is that's the father of the second kid!"

"Mr Macaw" wrote in message news
"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

Wikipedia contradicts itself in another article:

No, the difference is whether you are talking about one or two eyes.

No, with one eye it says 100-110 degrees outwards and 60 degrees towards
the nose. That makes 160-170 degrees.

Anyway, we were discussing sight, not sight with one eye shut. We were
discussing how far round you can see an object when looking straight
ahead.

I presume "when looking straight ahead" means without swivelling your eyes.
Maybe there should be two sets of figures with/without swivelling, because
when you detect something on the periphery, you look towards it (by
swivelling the eyes) and then see a bit further round in that direction.

200 degrees sounds incredibly high, but I've never tested my field of view.
I would have guessed that it would be slightly under 180 degrees - but that
it a guess without any testing. Maybe it *is* a realistic figure...

On Tue, 26 Apr 2016 11:22:07 +0100, NY wrote:

"Mr Macaw" wrote in message news
"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

Wikipedia contradicts itself in another article:

No, the difference is whether you are talking about one or two eyes.

No, with one eye it says 100-110 degrees outwards and 60 degrees towards
the nose. That makes 160-170 degrees.

Anyway, we were discussing sight, not sight with one eye shut. We were
discussing how far round you can see an object when looking straight
ahead.

I presume "when looking straight ahead" means without swivelling your eyes.
Maybe there should be two sets of figures with/without swivelling, because
when you detect something on the periphery, you look towards it (by
swivelling the eyes) and then see a bit further round in that direction.

200 degrees sounds incredibly high, but I've never tested my field of view.
I would have guessed that it would be slightly under 180 degrees - but that
it a guess without any testing. Maybe it *is* a realistic figure...

Easy enough to test yourself. I can see past right angles. I guess some people are more or less than others, but I wouldn't think by much.

Now what probably varies considerably is people's 3D field of view - if you have a large bridge on your nose, it will obstruct the view from one of your eyes. Perhaps this is why people with cute little noses do better in a lot of sports.

--
How do you scare a man?
Sneak up behind him and start throwing rice.

On Tue, 26 Apr 2016 10:43:13 +0100, Rod Speed wrote:



"Mr Macaw" wrote in message news
On Tue, 26 Apr 2016 02:36:32 +0100, Rod Speed
wrote:



"Mr Macaw" wrote in message
news On Mon, 25 Apr 2016 23:00:22 +0100, Rod Speed
wrote:

Harry Bloomfield wrote
michael adams wrote

Meanwhile, back in the real world...

"The visual field of the human eye spans approximately 120 degrees
of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

That is one of the more superficial wikipedia articles.

My own test on myself, suggests mine is much wider than that close to
200
degrees. Raise a finger of each hand concentrate on the PC screen,
move
the hands back at either side of the head, until the fingers disappear
from view - 200 degrees.

Yeah, mine is something like that too. Much more than 120.

I don't believe anyone has 120 who doesn't have a severe eye defect.

Looks like we are using different measures, one and two eyes.
https://en.wikipedia.org/wiki/Peripheral_vision

One eye is irrelevant to the topic in hand - how far to your right can you
see when staring straight ahead.

Yes, but it makes a big difference to the total you say.

My point is why was anyone looking up single eyes? You see things on your left with one eye and things on your right with the other. The field of vision of only one eye is useless information.

Both Wikipedia articles say it's just past right angles.

Which isnt all that different to the 200 Harry said he has.

I can believe 180, 200, 220, but I find it hard to believe many people are much below 180.

--
A man is a person who will pay two dollars for a one-dollar item he wants.
A woman will pay one dollar for a two-dollar item that she doesn't want.

In article , NY
scribeth thus
"Mr Macaw" wrote in message news
"The visual field of the human eye spans approximately 120 degrees of
arc.
However, most of that arc is peripheral vision. "

https://en.wikipedia.org/wiki/Vision_span

Wikipedia contradicts itself in another article:

No, the difference is whether you are talking about one or two eyes.

No, with one eye it says 100-110 degrees outwards and 60 degrees towards
the nose. That makes 160-170 degrees.

Anyway, we were discussing sight, not sight with one eye shut. We were
discussing how far round you can see an object when looking straight
ahead.

I presume "when looking straight ahead" means without swivelling your eyes.
Maybe there should be two sets of figures with/without swivelling, because
when you detect something on the periphery, you look towards it (by
swivelling the eyes) and then see a bit further round in that direction.

200 degrees sounds incredibly high, but I've never tested my field of view.
I would have guessed that it would be slightly under 180 degrees - but that
it a guess without any testing. Maybe it *is* a realistic figure...


It is oddly enough a good test to see if your pituitary gland isn't
playing up as this swelling, with a tumour of the same name, can affect
the peripheral vision as it presses on the Optic nerve.

Guess who's got one of they;!(

Usual method is to stare at a fixed point in front of you then with your
arms outstretched at the same level as your eye and with your thumb up
wiggle that from side to side and move it around towards the back of
your head it usually is around 108 deg in total the field.

Bring it back and as soon as you notice the movement of your thumb
whilst staring straight ahead that is the angle at that point..
--
Tony Sayer

On Monday, 25 April 2016 19:57:14 UTC+1, Mr Macaw wrote:
http://www.huffingtonpost.com/2013/1...n_4097761.html

"cats have a visual field that spans a whopping 200 degrees, as compared to 180 degrees in humans"

It also depends on teh individual women tend to have a wider filed of vision than men have. I believe this helps them nags us from any direct.


I disagree with this. Firstly, I tested my own vision and I have 220 degrees.

It's difficult to test yourself, have you ever tried tickling yourself ?.

The human eye only looks at about 15% of it's view it sort of scans and reports back to the brain.

Cats are better at seeing changes or fast movemnt rather than gradual changes which they dont normally worry about.



Secondly, I always find my cats looking straight at me or whatever they want to examine,

same for most creatures, as the cnetre of the eye is usually the the best for general viewing.
Have you ever noticed that some bulbs flicker out of the corner of your eye but not when you look directly at them.



they don't seem to be able to see sideways, and the other day I walked over to one cat, I was 90 degrees from his forward direction, and he didn't see me until I touched him to stroke him, which scared the hell out of him.

Maybe he was day dreaming.


What are your experiences of cats vision (and your own)?


Sometimes it sees a small fly or perhaps it hears it but it's following something I just can't see myself.
Cat was on my lap the other night and sudeetnly she started staring strangly at the window I tought it was something on the TV, but no it was a bird on the TV areal across the road through the net curtains, maybe some refelction or something made her suddently look up, but all I could see was a bird on a TV areail which didn;t hold my inerest but held hers for nearly 2 mins then she went back to sleep.

On Tuesday, 26 April 2016 10:07:37 UTC+1, Mr Macaw wrote:
On Tue, 26 Apr 2016 09:55:10 +0100, Tim Lamb wrote:


I like to claim good peripheral vision but 200deg. is only *something
there* or movement.

Not with me, I just held up a variety of bottles of pop at just past right angles and could tell which colour was which (I picked them up randomly from behind my back so my brain couldn't "cheat").

You can't really test yourself that's the point.

I have to wonder where these "studies" get their bull**** from. I simply can't believe I have cones where others don't.

you don't all your' doing is moving yuor eye without realising.

It's similar to saying boo to yourself and wondering why you didnlt jump like other sdo. it doesnt; make you special.
Tickling yourself is another thing you can't do effectively.