Cataract is an eye disease that is characterized by fog on the lens of the eye. The normal eye lens is transparent and contains a lot of water, so that light can penetrate it easily. Although the new cells in the lens will always be formed, many factors that cause the area in the lens becomes opaque, hard, and solid. Lenses that do not clear it can not go on the light onto the retina to be processed and sent through the optic nerve to the brain.
Statistics show that more than 90% of people aged over 65 years of suffering from cataracts. About 55% of people aged 75-85 years of his eyesight due to cataracts is reduced. Although it can actually be treated, cataracts are the leading cause of blindness in the world. Another source says, cataracts can be caused by eye injuries, metabolic diseases (eg diabetes), certain drugs (eg corticosteroids).
Most cataracts occur due to the degenerative process or a person’s age. Cataracts appear mostly in the elderly.
Cataracts have vague symptoms such as vision, sensitivity to light or light, double vision, blurry lens of the eye.
Surgery is the only way to cure cataracts. Surgery is done if the patient can not see well with glasses help to perform daily kegitannya. Some patients may feel better eyesight simply by replacing the glass eyes, glass eyes bifokus using a more powerful or using a magnifying lens. If a cataract does not interfere with surgery is usually not necessary.