Cataracts

A cataract is a clouding of the eye's natural lens, which lies behind the iris and the pupil, Cataracts are the most common cause of vision loss in people over age 40 and is the principal cause of blindness in the world.

Clouded, blurred or dim vision. Increasing difficulty with vision at night. Sensitivity to light and glare. Seeing "halos" around lights. Frequent changes in eyeglass or contact lens prescription. Double vision in a single eye. Fading or yellowing of colours.

One of the major highlights in cataract research in the past 5 years was the definitive establishment of an association between smoking and cataract formation. Recent studies also confirm that cataract development may be delayed by protection from ultraviolet ray exposure, for example, by wearing sunglasses and a hat with a brim.

Statistical analysis shows that 2.5 million people are affected with Cataracts in japan.