What causes the development of Cataracts?
How do Cataracts Affect Sight? The lens is normally clear so light can readily pass through it, producing a sharp image on the retina; when the lens becomes opaque, light can’t pass through as easily. Having a cataract is like trying to look through a foggy window. The cloudy lens blocks the passage of light, thereby casting a blurred image on the retina. Clouding of the lens may affect only a small portion of the lens, or may affect the entire lens. Cataract formation may cause little or no visual problem for some people, especially in the early stage of the problem, but other experience a substantial decrease in vision that may requires surgery. Severe Cataracts may cause a complete loss in functional vision. The degree to which a person’s vision is affected by cataract formation depends on the location and degree of clouding. For instance, if the area clouding initially starts at the side of the lens, a person’s vision may not be drastically affected for years, because peripheral vi
