Cataract surgery is a relatively quick procedure, usually taking about 10 to 15 minutes, but patients usually need to stay in the hospital for about 3 days. Cataracts are a common disease in ophthalmology and occur in middle-aged and elderly people. It is usually caused by aging factors, eye trauma, long-term chronic inflammation in the eye, or prolonged use of hormonal drugs, which leads to the degeneration and clouding of the lens inside the eye, and requires surgical treatment to replace the clouding lens with a transparent IOL in order to restore vision. Cataract surgery technology is very mature, the operation process is also relatively fast, the patient has less pain, usually about 10 to 15 minutes to complete the operation, but the patient’s entire treatment cycle usually need to be hospitalized for about 3 days. Cataract surgery does not take long, but it is best to go to a regular hospital for examination before surgery.