Host: Do treatments always improve vision? Dr. Laura D. Cook: If the cataract is the cause of the decrease in vision or the glare symptoms, removal of the cataract or surgical correction should fix it. However, sometimes we can't see the retina to do a full evaluation or there maybe another ocular diagnosis which is causing the problem with the vision, also, in a patient who has a cataract and so sometimes removing the cataract is diagnostic and you see that the vision isn't improved and we have to look for something else or realize that, that other concomitant diagnosis is causing the problem. However, if there is no other ocular condition, removing the cataract should improve the vision.