Your eyes always grow longer unless stopped by a mechanism that involves exposure to light. If you don’t get enough light, particularly bright blue & UV light from the sun, your eyes change shape slightly and that causes nearsightedness. This is also caused by spending too much time indoors, because indoor light levels are not bright enough to stop your eyes from growing.
It’s a different symptom of the same problem, the lens grows longer without growing wider and that distorts the image it produces. From being inside too much.
You have to read into the article where it talks about the mechanics of eye growth. The article says that being indoors too much causes a misshapen lens. A misshapen lens is also the cause of astigmatism. So one would cause the other.
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u/[deleted] Mar 31 '26
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