Cataracts can cause vision loss. In the past, many elderly people lost their eyesight and could not take care of themselves because of this, so many people are very afraid. In fact, this is a misconception. Cataracts are just like people’s hair turning white when they get old, and they are a phenomenon of the aging and clouding of the lens. With today’s medical conditions, there is no need to be very worried because most people can recover their vision through surgery. Can cataracts be prevented? The effectiveness of medication for cataracts is inexact, which means that there are no medications that can cure cataracts and turn cloudy crystals into clear ones. Various eye drops can only slow down the development of cataracts by affecting some part of the cataract formation through antioxidants, vitamin supplementation, and control of enzyme activity. How can I be sure if I have a cataract? An ophthalmologist can determine if you have a cataract by using a slit lamp examination and depending on the degree of clouding of the lens. What should I do if I have a cataract? The most effective treatment for cataracts is surgery, which involves removing the clouded lens (cataract) and implanting an artificial lens. Current surgical options include this cataract extraction by ultrasonic cataract extraction and modern extracapsular cataract extraction. When is the right time to have surgery? Surgery is usually done when the vision is between 0.2 and 0.4. With the update of technology and the maturity of surgeons’ skills, we now do not advocate waiting until the cataract is fully mature before surgery, because when the cataract is fully mature and the vision drops below 0.1, the cataract becomes very hard and difficult to handle, and the recovery after surgery is slower. Some patients with special conditions have obvious visual symptoms visual acuity 0.6-0.8, which are also indications for surgery Will cataracts recur after surgery? Many patients are concerned about recurrence after cataract surgery. The clouding of the posterior capsule after cataract surgery is called posterior cataract, which is related to the surgical method and IOL material and design. Even if posterior cataract occurs, no surgical treatment is needed. We can perform laser posterior capsulotomy in the outpatient clinic to solve the problem once and for all.