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A cataract is simply a cloudy lens that is blocking your vision. Cataract surgery is removal of this lens (the cataract) followed by the placement an artificial lens. Placing this artificial lens is crucial in obtaining a good result. Without it, you would have to wear thick coke-bottle glasses. The strength of this artificial lens is calculated by your eye doctor. Cataract surgery is one of the most common operations performed in the United States and has a 98%-99% success rate. With modern surgical techniques, the vast majority of patients have clear vision within a week of the surgery, often without distance glasses. Furthermore, since the surgery is done with a very small incision, most patients have minimal post-operative restrictions. It is rarely an emergency and doctors generally do not push patients into having cataract surgery unless the patient feels it is affecting their lifestyle. Thus, you do not have to have cataract surgery just because you have cataracts.