This question already has an answer here:
- Bad Eyesight and Evolution 4 answers
The title says it all, what makes eye defects so common in the world? Whereas defects of any other body part is quite uncommon, I searched online and one of the articles said that 6 out of 10 people wear glasses, I think that is a big percentage of people with eye defects, BTW I'm myopic and I wear glasses too. Are all body parts defective to a certain degree, but It seems more pronounced in the case of eyes?
I know nothing about biology, I appreciate if someone could explain it with preferably less technical terms, this is my first question on BSE, let me know how I can make the post better.