The benefits of cataract surgery for 80 year olds are that it improves the patient’s vision and prevents cataract related complications. Cataract is a common ophthalmic disease that occurs in middle-aged and elderly people, with a higher incidence the older the patient is. It is caused by aging factors that lead to clouding of the lens inside the eye, etc. Cataracts in 80 year olds can be treated surgically if they meet the criteria for surgery, which can improve the patient’s visual acuity and significantly enhance the patient’s quality of life. Cataracts may cause many complications, such as lens-derived glaucoma and cortical allergic uveitis, etc. After cataract surgery, the risk of these complications can be reduced. It is recommended that cataract patients seek prompt medical attention to evaluate their condition and follow their doctor’s instructions.