Why does sight go bad?!


Question: Why does sight go bad?
My vision has been going bad since around the time I was in fourth grade, but I can remember struggling with it when I was in the first grade. I am near sighted and recently had my vision estimated at 20/70. I am now 17.
My parents are both near-sighted, and my dad requires bi-focals. My mom has moderate vision impairment while my dad's is pretty severe and has been since he was a teenager.
My brother and sister both require glasses, but my prescription is several times stronger than either of theirs.
I get that this sort of thing is genetic, but why? Any info would be great, thanks in advance.

Answers:

You are short sighted not near sighted

Down with political correctness



There's no definite cause of myopia, but in your case it's probably hereditary.

http://www.readingglassesshopper.com/resources/eye-health/conditions/myopia/




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