Diabetic retinopathy is a disease of the eye that only affects patients with diabetes. Most patients do not suffer from any symptoms until blindness occurs. It is estimated that 20% of diabetics already have damage by the time they are screened. Early detection is the key to prevention. With the aid of the Digiscope eye exam, a digital imaging device, diabetic retinopathy can be detected quickly and easily. During the exam the eyes are dilated with eye drops and a camera takes multiple images of the retina. These pictures are electronically transmitted and read by specialists at the Wilmer Eye Institute at John Hopkins University. The test takes only 10 minutes to do, after the eyes are dilated. Patients with certain types of Glaucoma may not be able to have this exam. Call or ask your doctor for availability.