By age eighty, greater than half of us will have had a cataract, or cloudy lens. Your vision slowly will get foggy and it will get onerous to learn, drive, and see at night. Diabetes, smoking, or an extreme quantity of time within the solar raise your chances. Surgery that replaces the clouded lens with a man-made one works properly. Nearsightedness could make it harder to drive, play sports, or see a blackboard or TV.