Cataracts are a common disease in the elderly and are the most common cause of blindness and visual disability. The prevalence of cataracts accounts for 60% of people in their 50s and 90% of people in their 70s. There are many factors that cause cataracts. A cloudy lens in the human eye is called a cataract, and once a cloudy crystal occurs, it blocks light from entering the eye and causes vision loss. Cataracts can also be caused by other systemic diseases such as hypertension and diabetes. Long-term exposure to ultraviolet rays of the sun and trauma can also easily lead to cataracts. People should usually pay attention to more vitamin C, vitamin E and vitamin D, and pay attention to hydration to prevent cataracts. ”Some elderly people are not aware that they are suffering from eye diseases such as cataracts and think that blurred vision is a normal manifestation of aging, and they do not go to the hospital until their eyes are really blind, at which time they may have irreversible eye diseases such as glaucoma and miss the best time for treatment. If you ignore the symptoms of blurred vision, it is very likely to cause blindness.” Doctors suggest that if you experience blurred vision and loss of vision, which can affect your work and life, you should go to the hospital for an examination and diagnosis. Many patients’ families believe that it is dangerous for the elderly over 90 years old to have surgery because of poor wound healing, but it is not true. There is no uniform age limit for cataract surgery. Some elderly people are in good health, have stable blood pressure and heart condition, and most cataract surgeries are performed with local anesthesia or spot anesthesia (surface anesthesia), which is very painless, short, minimally invasive, and very mature, so they can mostly afford the surgery. In general, elderly people should pay more attention to their living habits and eye hygiene, and stay away from the high incidence of cataracts, and take more precautions against diseases that can trigger cataracts, especially for diabetic patients.