Near sightedness or Myopia is mainly caused by the eye being too long, rays of light focus in front of the retina.
Far sightedness or Hyperopia is mainly caused by the eye being too short, rays of light focus behind the retina.
Lots of children are born with Hyperopia but "grow out" of it because as they, grow, the eye lengthens.
That is why more people are near sighted, you can't "grow out" of it.
AnswerYour eyes have to be perfectly round to have perfect vision.the real question is why so many people don't need glasses?
Glasses for nearsighted people are convex. That is, the center of the lens is thinner than the outer edges.
people who are nearsighted
The Nearsighted School Teacher was created in 1898.
There is some evidence that myopia, also known as nearsightedness, can be inherited. As you get older your vision may change too. Another reason one may be nearsighted is because of constant eye strain.
absoloutely not, sight problems are not hereditory
farsighted
A Nearsighted Chaperone - 1911 was released on: USA: 30 September 1911
The Nearsighted School Teacher - 1898 was released on: USA: July 1898
myopia
Farsighted
Well, yes, most of them are.
Glasses