Our ability to "see" starts when light reflects off an object at which we are looking and enters the eye. As it enters the eye, the light is unfocused. The first step in seeing is to focus the light rays onto the retina, which is the light sensitive layer found inside the eye. Once the light is focused, it stimulates cells to send millions of electrochemical impulses along the optic nerve to the brain. The portion of the brain at the back of the head interprets the impulses, enabling us to see the object... (Read More)

About 80 percent of all babies are born farsighted -- able to see objects clearly at a distance but less clearly close up. Some five percent are born nearsighted, or unable to see objects at a distance clearly.

Approximately 15 percent are born with nothing wrong with the refractive parts of the eye -- the cornea and crystalline lens which bend light and focus it properly on the retina. Farsightedness usually decreases as a child ages, typically normalizing to a negligible value by the age of 7-8.

After a child grows and the incidence of farsightedness decreases, that of nearsightedness increases. Many school-age children and teens first discover they are nearsighted when they have difficulty reading the writing on the board at school. Nearsightedness usually occurs before age 25... Children's Vision (Read More)

Most changes in vision occur in the early and later years of life. Although some people may discover they have nearsightedness -- or difficulty seeing at a distance -- as late as their mid-20s, vision typically stabilizes during the late teen years. From then until around age 40, vision typically changes little, if at all... Mature Vision (Read More)

Eye care experts generally agree: Watching television will not harm your eyes or vision if the TV room is lit properly and if you follow a few viewing tips. In fact, there is usually less strain involved in TV viewing than in doing close work such as sewing or reading. But TV watching for long stretches of time can leave your eyes fatigued... TV & Vision (Read More)

Good vision is vital to reading well. And although vision may not be the only cause of reading difficulties, it is one that is sometimes overlooked.... Reading & Vision (Read More)