"Jeff Layman" wrote in message
...
On 07/06/2021 00:48, Dave Plowman (News) wrote:
In article ,
newshound wrote:
I have the bottom of mine about 12 inches above the desk, so the tops
are about level with the top of my head. But although I use varifocals
elsewhere, I have dedicated single focus "computer" glasses, IIRC +1.5
on my infinity prescription.

Same here. Need more powerful ones for reading, though.

I also require glasses for reading small print (moderate
long-sightedness - +2.5D glasses). I really dislike wearing them because
apart from making the print clearer, they also magnify it. I can't get my
head round whether or not this is solely a consequence of the lenses
correcting the long-sightedness being convex, or it's something else. Why
is it not possible to correct the focal deficiency without magnification?

As an aside, does anyone else feel that an eye-test where you are asked if
different lenses are clearer or not isn't very scientific?

There isnt any other way to do it.

It represents one "measurement" at one point in time.

Yes.

I often wonder that, if the test was repeated at different times on
different days, it would give the same result.

Yes it does.