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.