1. What is a cataract? There is a lens in our eyes that resembles a convex lens, and a cloudy lens is called a cataract. 2.Can cataracts be treated with medication? At present, there is no recognized medicine that can treat cataracts. 3. Do cataracts have to wait until they are mature before surgery can be performed? No. With the continuous improvement of cataract surgery technology and the improvement of people’s living standard and quality, it is not necessary to wait until the cataract is mature. And if you wait until it is too mature, it can cause secondary glaucoma. Therefore, there is no unified and strict standard for when to have surgery, but in general, as long as cataract causes vision loss and affects the patient’s life or further treatment of fundus disease, surgery can be considered. 4. Why is it that some people’s vision does not improve significantly after cataract surgery? Cataract surgery only replaces the cloudy lens with a transparent IOL, just like changing the lens of a camera, but if the negative is not good, that is, if the fundus is not good, the improvement of vision will not be obvious. 5.What is cataract ultrasound emulsification? Cataract ultrasound emulsification surgery is performed by making a 3mm incision in the eye and then inserting an ultrasound emulsification needle to crush the cloudy lens and suck it out. 6. Are all cataract patients suitable for ultrasound emulsion surgery? No. For early to mid-stage cataracts, ultrasonic emulsification does have some advantages if the lens nucleus is not too hard, but for patients with a hard lens nucleus, conventional small incision cataract extraction surgery is safer.