Anuja Bhandari, MD, a ophthalmologist with The Everett Clinic discusses cataracts. Cataracts are one of most common surgeries that are done in people above the age of 65. Cataracts are a medical condition in which the lens of the eye becomes progressively opaque, resulting in blurred vision. It can be like looking through a dirty window. Cataracts are diagnosed through an exam and surgery is usually the end result. Cataract surgery has a very high success rate.