Cloudy lens, also called cataract, is one of the most common diseases in ophthalmology, especially in middle-aged and elderly people. The treatment of this disease depends on the severity of the disease, if in the early stage of the disease, the lens is only mildly cloudy and does not yet have a significant impact on vision, treatment is usually not needed at this stage, and do not blindly choose various drugs or conservative treatment methods to control Cataracts. According to current research, conservative treatment or medication has no significant effect on the development of cataracts. When the clouding of the lens becomes more and more obvious and causes a particularly large loss of vision, surgical treatment can be considered and is currently the most important way to treat cataracts. The most commonly used surgical method is cataract ultrasonic emulsion aspiration combined with IOL implantation, and the recovery of vision after surgery is usually ideal.