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Cataract
A cataract is best understood as being similar to a spot of paint on a camera lens. Whether that paint spot affects the picture depends on how big it is and where on the lens it is located. Obviously, a pinpoint spot on the edge of the lens would have minimal effect, whereas a big spot in the center might force one to replace the lens. So too, what is done about a cataract depends on whether and how much it affects one's vision. If a person has impaired vision, a careful examination by an eye specialist is required to determine whether the problem seeing is due to the cataract or is simply the type correctable by eyeglasses. Where a cataract is shown to be the cause of significantly impaired vision, the good news is that cataract surgery is often remarkably successful. Most cataracts, however, are small, cause no problems, and need nothing done about them. |
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