It is not yet clear, why the eye's lens changes as we age and develops into a cataract.
Research is on for the preventive measures.
There is no drug or drops as yet that has been proven to be of value in preventing cataract. It is now recommended to wear sunglasses and a wide brimmed hat to lessen the eyes' exposure to UV rays from the sun. Other studies suggest people with diabetes are at risk for developing a cataract, as are users of steroids, diuretics, and major tranquilizers. Sometimes the child may be born with cataract or may develop cataract in early childhood. The management of these cataracts is different from that in adult patients.