A cataract is clouding or opacity of the lens in your eye. When a cataract develops, the lens becomes cloudy and can stop the light rays passing through to the retina and this causes vision to be blurred. Cataracts usually form slowly and cause a gradual blurring of vision.

Often they are diagnosed at routine eye appointments. Cataracts often cause glare and difficulty with night-time driving. In most cases, cataracts are successfully treatable by surgery. The damaged lens is removed and an artificial lens inserted