Currently, the mainstream cataract surgery procedure is ultrasonic emulsion lens extraction (Phaco), which has been popularized in China. It is a very mature surgery, but patients still need to pay attention to many problems after the surgery, otherwise there will be a variety of post-operative conditions that affect vision. It is necessary to pay attention to: 1, in the early post-operative period, to strictly follow the doctor’s instructions for medication, and avoid eye water within a week after surgery, especially the more dirty water, to avoid infection, once the infection occurs, it is very harmful to the eyes. 2, pay attention not to rub the eyes, avoid eye impact, so as not to affect the post-operative incision healing, because the incision completely healed, it may take one or two months, during this period the incision is unstable. 3, regular review, if you need to wear presbyopic lenses, you need to wait until three months after the surgery, because the refractive state needs at least three months to stabilize. 4.If there is sudden eye redness, eye pain or a sharp decrease in vision, go to the hospital for follow-up in time. 5.Since the optical part of the IOL is not completely colorless, some patients have the sensation of bright, white and blue vision, which requires a period of recovery and adaptation. The above are the precautions after cataract surgery.