On 9/8/2019 9:43 AM, J. P. Gilliver (John) wrote:
In message , SC Tom writes:


"J. P. Gilliver (John)" wrote in message
...
In message , Peter Jason
writes:
Hi, I wear glasses for astigmatism etc and I wonder if it's possible
to buy a monitor whose screen can be adjusted for this & similar
conditions?

What a fascinating question, and excellent lateral thinking on your part!

I thought I knew what astigmatism was, and just checked with
[]
Unfortunately, unless your astigmatism is equal in both eyes, and your
vision is equal in both eyes as well, there's not much you can do to
adjust a monitor for that. As one who has 20/200 vision in one eye,
20/400 in the other, and moderately bad astigmatism in only one eye (my
"good" one, of course), I can absolutely state that there is nothing
that can be done to a monitor that would help me see anything clearer
without my specs :-)

The original poster Peter Jason didn't say he only had it in one eye.

I you're still reading, Peter - what _is_ the nature of your
astigmatism: is it different _gain_ in the X and Y directions (making
circles look oval), different _focus_ (as described by Johnny and
Wikipedia), or something else? And _are_ your eyes different (to each
other)?


Astigmatism can be caused by an irregularity in the eye's cornea or
lens. It might be in only one eye. If it is in both eyes, it is often
not the same in each eye.

While the usual irregularity is a curvature that differs between the
vertical and horizontal, it is also possible that the curvature is "off"
on a diagonal. In some cases, however, the irregularity can be a
waviness in the cornea or lens.

Given all this, I really do not think any adjustment to a computer
monitor would substitute for eye glasses, contact lenses, or eye surgery.

--
David E. Ross
http://www.rossde.com/

Immigration authorities arrested 680 undocumented aliens in meat
processing facilities in Mississippi. Employing someone who is not
legally in the U.S. is also illegal. How many of the EMPLOYERS are
being criminally charged? If none, why not?