| ▲ | m463 2 hours ago | |
The lens of the eye usually degrades as you get older. For most people it becomes inflexible first, and you might have trouble squeezing the lens and it limits your range of focus. This is when most people need reading glasses. I had problems with cataracts, when the lens further gets cloudy. Most people eventually get cataracts due to age, but some conditions can speed up the process and you get them earlier. When I had the problem, I had trouble with glare while driving, and seeing a bright computer screen was a chore. I switched to dark mode for reading and computer use and it really helped. It was such a relief. For driving, the glare was like shining headlights on a dirty windshield. Some situations like bright tuner headlights on a rainy night were confusing and required extra care. It helped to use polarized driving glasses, but only a bit. When this stuff gets to be too much, people get cataract surgery to replace the lens. This operation is pretty well sorted, it takes a few minutes to replace the lens, and most people really enjoy the results. for me, I chose single-vision lenses. I got very very good 20/20 vision at a distance and used reading glasses for near vision. There are lots of types of reading glasses available and I have lenses for my computer. I can use very small fonts, and dark mode is completely optional. Funny, but driving at night is a big change. I can see clearly and headlights have switched the type of glare. I can now focus on bright headlights and now the problem is all that light focuses perfectly on probably one cell on my retina and is almost painfully bright. (there are two kinds of glare - disability glare the kind I used to have, and now discomfort glare with a reaction to the absolute brightness) oh, and now that I focus at infinity, getting reading glasses is easy. the formula for it is: 1 / distance-in-meters = +x.xx diopters. So to read your phone at .5 meters, use 1/.5 = +2.00 diopter reading glasses. My computer screen works out to +1.25 diopter. Really close project stuff is +3.0 or more https://en.wikipedia.org/wiki/Cataract | ||