Cataract is a dark patch located behind the pupil causing a disturbance of vision. The lens is normally transparent to let light through. When the lens loses its transparency (cataract), the view is affected.
For persons over seventy-five years, cataract affects nearly one in two. Prolonged exposure to sunlight can damage the lens of the eye. Smoking, lack of vitamins and some medications can precipitate the onset of cataracts.
Cataracts can cause a veiled vision, poor night vision, a vision of dull colors or other symptoms affecting the view.
Cataracts can be treated by surgery. The procedure is done under local or general anesthesia. The lens is now replaced by a dark plastic lenses. The result is often impressive to the point that the color intensity seems excessive. This impression fades the day after surgery. The complications of this surgery are rare nowadays.
Studies have shown that the radiation emitted by computer monitors and other electric or magnetic sources have no impact on human health. However, improper position, several hours before a computer can help backache and mouse can sometimes be the cause of tendonitis. The fixing of the screen makes the eye blink less often, which can dry the eye. On the computer, it is advisable to take breaks regularly.
29 avril 2010
| The text above is for information purposes only. Only a doctor can diagnose a disease. No treatment (medication or scheme) should be undertaken without consulting a health professional. |