Mayo Clinic Department of Ophthalmology: Low Vision Service

The goal of the Mayo Clinic low vision specialty group is to help you make the most of the vision you have. Low vision means having impaired vision that cannot be corrected by glasses, surgery or medication. The most common cause of low vision is macular degeneration, an age-related disease that affects the central portion of your visual field. Other common causes include glaucoma, cataracts and diabetes.