Cataract is a common disease in ophthalmology, and the incidence of this disease is increasing year by year as aging increases, so currently the incidence of cataract can be maintained at around 20% for those over 60 years old; around 40% for those 70 years old; and basically 70-80% of those over 80 years old will develop cataract. This disease is a common disease in ophthalmology. In the early stage, it usually does not need to be dealt with because the impact on vision is not too great. After the development of cataract is serious, for example, the visual acuity of the naked eye decreases to less than 0.3, surgery can be considered. The most common surgical method is cataract ultrasound emulsion aspiration, combined with IOL implantation, and the visual acuity can be restored to normal after surgery.