Michael Moore wrote:Why a 27" monitor its not ok for UHD and a 32" monitor is? How many of you work every day at 32" monitor and do you fatigue yours eyes?
I use a 32" 4K monitor viewed at 70cm for at least 8 hours a day (with breaks!!). I have no problems at all using Adobe apps, Word, CorelDraw and the dozens of others that I use - but DVRS always gives me eye strain because UI contrast is so low and text size is so small.
I'd love the ability to adjust the UI palette to suit me and this should be relatively trivial (depending on how coherent the software structure is). Changing font size is likely to a little trickier, but should be do-able if the will was there.
"The usually-touted relationship between viewing distance and screen size arises from watching TV screens in the early days, when the distance was calculated to provide the best balance between the screen and artefacts. It lost some of its relevance with digital TV - although there is still a (somewhat variable) relationship between visibility of artefacts and how big the screen appears to your eyes (image compression systems make some assumptions on the viewed image size to conceal artefacts).
"Computers are a different matter, and ideal distance must take into account different factors - the most important of all is your own personal natural/comfortable viewing distance. If you're too close or too far, you will cause eye problems (note I say "problems", not "damage"!) because the eyes are having to permanently adjust their accommodation more than they would otherwise do. How much this affects you depends on age - and eye accommodation drops dramatically from about age 10.
"Another important aspect is how much your eyes/head have to move to view things at different parts of the screen. This strains the eye (and sometimes neck) muscles and also, on a big screen, the eye is constantly having to refocus.
"The eye's ability to refocus largely depends on your age and the contrast of the image, which is why small and low-contrast text is very bad. A properly-designed UI will allow the user to make adjustments, especially if it is dark as depth of field at low brightness is severely reduced, making eye accommodation work even harder (that's why you're advised to use a decent light when reading)."The above is extracted from something I wrote a few years for a software company.
Although my honours degree is in psychology, my career was in broadcast media, but with a lot of experience in software design (including as editor of a computer magazine for a while), and I now do a lot of voluntary video editing. I also worked as an occasional consultant on a couple of UI design projects (including one military), with advice from two professors of ophthalmology.