Cataract is the most common eye problem that occurs in elderly people. It is a medical condition in which the lens of the eye becomes cloudy. If you have cataract, the lens of the eyes becomes foggy, or looks like a dusty car windshield. Cataracts are of three types:
Subcapsular cataract - This cataract occurs at the back of the lens. People suffering from diabetes or those who take high doses of steroid medications are at a greater risk of suffering from subcapsular.
Nuclear cataract - This form of cataract forms deep in the central zone of the lens. Aging is the most common contributing factor of this type of cataract.
Cortical cataract - In this form of cataract, white opacity starts to form on the periphery of the lens. Cortical cataract mostly occurs in the lens cortex.