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?
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
farsighted
For people who are farsighted, images come into focus behind the retina; for people who are nearsighted, images come into focus in front of the retina.
Well, yes, most of them are.
Yes
farsighted
They would be Farsighted. Nearsighted is when you cannot see close up. So, the word is the opposite of the definition.
Drinking alcohol does not seem to be related to the development of glaucoma. It is most common in people who have a family history of glaucoma, people who are nearsighted or diabetic, people suffering from other diseases of the eye and those who smoke.
Yes, they do.
The focal point is in front of the retina