Cataracts may not always obscure vision significantly. They start out of small magnitude and are almost inconspicuous to the afflicted individual. If a cataract evolves so that sight is impeded or it starts affecting the quality of life, then it should be extracted. On the other hand, if remains static, surgery is not necessary. It's essential to have comprehensive vision exams with your eye doctor frequently in order to track the development of cataracts and determine when it's time for surgery.