Cataract surgery in both eyes usually means that the cataracts in both eyes are completed during the same hospital stay. The cost of the surgery is less than if done separately, and the overall cost is about $12,000-15,000. The first part is the cost of hospitalization plus surgery, which is about 8,000 yuan; the second part is the cost of the IOL selected, which is less certain because there are many kinds of IOLs with different prices, ranging from several hundred to several thousand dollars. Since IOLs need to be implanted in both eyes, if an IOL of 2,000 dollars is selected, the cost of this part will be 4,000 yuan or so. Therefore, the overall cost is about 12,000-15,000 yuan, and the interval in between is usually required for about 3 days to recover and stabilize the condition before considering the second eye surgery.