Common and Age-Related Vision Issues

The majority of common vision issues involve refractive errors, also referred to as nearsightedness, farsightedness, astigmatism and presbyopia. Refractive errors happen when the shape of a person's eye prevents light from focusing directly on their retina. The length of a person's eyeball, either shorter or longer, changes in the shape of their cornea, or aging of the lens, may all cause refractive errors. Many people experience one or more of these conditions.

URL: http://www.disabled-world.com/disability/types/vision/issues.php