What is cataract? A cataract is an opacity (or cloudiness) in the lens of the eye. This cloudiness develops inside the lens and restricts light passing through the eye and reaching the retina. When this occurs, vision is affected. An opacity can be quite minor or it can become so marked that it prevents adequate vision.
How is cataract treated? Only cataracts causing symptoms need treatment. Modern cataract or lens replacement surgery is effective in restoring vision to most patients. This involves removing the cloudy lens from inside the eye through a small incision and replacing it with a new artificial lens, called Intra ocular lens (IOL) How does cataract affect sleep and cognitive function according to a recent study in Japan Advanced cataracts can reduce the amount of light that reaches the retina in the back of the eye, and this may cause an abnormal circadian rhythm that affects…
