Cataract refers to the clouding of the lens after the degeneration of the lens protein in the eye, which obscures the light from the outside world, resulting in the loss of vision. Cataract is one of the main diseases that cause blindness in the elderly. The treatment of senile cataract is as follows: 1. General treatment: wear a hat when you go out, and it is better to wear sunglasses because ultraviolet light tends to cause protein degeneration; eat more vegetables and fruits rich in vitamin E and vitamin C; eat less sweets; you can drink some tea that nourishes the liver and brightens the eyes, which is helpful for cataract; 2. The main surgical options for cataract are After the cataract is removed by ultrasonic emulsion aspiration, then artificial lens implantation is performed. the surgical incision is small, usually less than 2.5mm. generally speaking, the elderly should actively consider surgical treatment when their visual acuity decreases to less than 0.2-0.3. If you cannot see at all, the lens becomes hardened, but it will make the surgery more difficult. Necessary examinations should also be performed before cataract surgery to understand the presence of eye inflammation and fundus lesions. If the fundus lesion is heavy, IOL implantation is not recommended.