The most conventional surgical procedure for cataract surgery is cataract ultrasound emulsion aspiration combined with IOL implantation, which costs about RMB 6,000-8,000. The cost of surgery is divided into two parts: the first part is the cost of hospitalization, which costs about RMB 3,000-4,000; the second part is the cost of IOL, which is uncertain because there are many different kinds of IOLs, ranging from several hundred to several tens of thousands of dollars, depending on the patient’s eye condition, economic condition and the patient’s personal will. If the patient is old and frail or has a combination of fundus disease, it is generally not recommended to choose too good IOLs, but ordinary IOLs are fine, and the price is generally within 3000 RMB; if the patient is a young cataract patient, since he or she needs good visual quality after surgery, he or she can choose better IOLs, such as bifocal IOLs or trifocal IOLs, and the price is generally within several thousand dollars, or even 10-20 thousand dollars.