Cataract is one of the most common diseases in ophthalmology, which refers to the clouding of the lens caused by various reasons, and after the clouding of the lens, it leads to different degrees of vision loss. However, there are clear indications for surgery. In the early stage of the disease, if the impact on vision is not great, for example, if bare eye vision can be maintained above 0.3, surgery is not yet indicated. In the early stage of the disease, if the impact on vision is not significant, for example, if the naked eye vision can be maintained at 0.3 or above, surgery is not indicated. At present, the most commonly used surgical method is cataract ultrasonic emulsion aspiration combined with IOL implantation, which is the most commonly used surgical method and the surgical result is also very good, and the vision can be completely restored to normal in about one month after surgery.