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> My suspicion is that staring at objects closely and under dimly lit conditions causes pseusdo-myopia Are you implying that cell phones could be a factor?

• DantesKite 4y ago
  That wasn't my intention, although I imagine they do play a role. The human eye (specifically the ciliary muscles) are most at "rest" when staring at objects in the distance. The human eye doesn't seem to be as well-suited for staring at distance less than ~20 feet for long periods of time. I imagine learning how to read and write in general, the shift from an agrarian society to cognitive labor, and the invention of glasses all were just as important factors.
  • forum_ghost 4y ago
    Myopia is also correlated with spending less time outdoors. Your theory about 20 ft is literally correct. Atropine is successfully used to relax the cilliary muscles. However, there is lots of anecdata that rigid contacts don’t make your eyesight worse over time.
    • graeme 4y ago
      Interesting, why would rigid contacts lead to less degradation?
      • forum_ghost 4y ago
        just guesses, because they are so infrequently worn these days, is that it somehow prevents eyeball deformation due to its rigidity and so the axial elongation does not occur. I'm a little sceptical about that theory, but my own rx did not go increase much when I wore RGPs. After that I did have some progression, but also a million other things changed, so who knows. RGPs however, are quite distinct in that they give absolutely perfect vision. better than soft contacts by a mile. Maybe some refractive thing as well, optometrist told me numerous times under-correction would lead to further progression. Ortho-K is popular in Asia for prevention, those are rigid lenses worn at night. Deforms cornea a little, so it's like a reversible lasik thing. So, in this case, not only its rigid lenses, they also have weird geometry. Many report significant success.
  • nsonha 4y ago
    People whould wear reading glasses even before myopia. And when they do get myopia, they should NOT wear prescribed glass while reading/working, but a reading glasses that factor in their myopia. I dont understand why people especially shortsighted people still use the same glasses for everything. Why don't octometrists know better?
    • 8note 4y ago
      People wear the same glasses for everything because it is hard remembering where your glasses are, carrying them around, and swapping back and forth every couple seconds. Its a horrible user experience
      • nsonha 4y ago
        That's hyperbole, you only need to wear a working pair 9 to 5 at your desk and a normal pair the rest of the time.
        • arghwhat 4y ago
          You only look at things relatively close to you from 9 to 5? You don't have computers or TVs at home? A smartphone? Cooking instructions? It's not a hyperbole, glasses are massively inconvenient to those of us handicapped without, and having to hot-swap then depending on subject is massively more inconvenient.
          • nsonha 4y ago
            It's hyperbole because you consistently ignore the fact that eyes can change focus for the short term, that's like the one thing they do. It's straining your eyes for long periods, at the same focal point, such as while working, that we need to help with. PS: you are right, maybe instead of only at the desk, just wear a "near sight" pair all the time, when you're indoor, and a far sight pair when you are out. Point is you dont have to hot swap.
            • 4y ago
• jk7tarYZAQNpTQa 4y ago
  > Are you implying that cell phones could be a factor? And books, too.