1. Is there any relationship between presbyopia and cataract? No. Presbyopia refers to the phenomenon that the focusing function of the lens decreases as we age, resulting in blurred vision when looking at near objects such as reading newspapers. However, cataracts are caused by the clouding of the lens, which leads to vision loss, and need to be solved by special cataract treatment programs. 2. Do cataracts need to wait until they are “mature” before surgery? No. There is no need. Advances in surgical methods have made this concept obsolete. Early surgery causes less damage to the eye and provides better recovery. Overly “mature” cataracts can make surgery more risky and difficult. You can talk to your doctor about the right time to have the surgery. 3. Will the cataract surgery be painful? No. Most patients do not feel any pain and may only feel minor discomfort in their eyes. 4.What factors will affect the recovery of vision after surgery? Cataract surgery has a high success rate, and most patients have significantly improved vision the day after surgery. However, the recovery of vision after surgery also depends on the function of other components of the visual system. Various problems with the cornea, vitreous, retina, and fundus can affect post-operative vision recovery to varying degrees, and therefore will vary from individual to individual.