I have a few questions regarding myopia.
1) Do screens actually cause myopia, if so how, is it how closely it sits from our eyes, if it’s in the darkness or is it the screen itself
2) Can myopia get worse, or does it stop and stabilise at a certain age?
3) Are there ways to reverse/treat myopia?
In: Biology
Typically, the eye is too big/long, and instead of being a sphere, it is sort of an oval-ish shape. This changes where the patient can focus, specifically making them only able to focus on things that are close.
There are other ways to have short-sightedness, but this is the common way to grow up and develope it – your eyeballs get a bit too big.
There is decent evidence that there is a genetic component, but also that a lack of sunlight contributes. My optometrist told me that a study in china tried to see if instructing parents to force their children to have minium amounts of outside time (in order to get sunlight) could impact myopia rates. The results strongly pointed to ‘yes’. They couldn’t tell if there was some minimum amount you should get, however, since in aggregate the parents failed to actually force their children to spend quite as much time outside as the scientists requested, because the parents wanted their children to have more time to study.
So, ‘near work’ doesn’t directly cause myopia, but ‘being the kind of person who does lots of near work’ probably means you spend time inside, lack sunlight, and that lack of sunlight seems likely to increase the risk of myopia.
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It tends to get worse while growing, and then stabalise, or slow down.
My prescription I think stabalised around 2.5 diopters, but the optomitrist notes a drift of maybe 0.25 dipoters every few years, slowing down as I get older. It might stabalise, or slowly get worse with age.
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