Regular eye examination can detect early damages to the eye from diabetes. Diabetes is a serious disease that can permanently damage many parts of the body, including eyes. Diabetic patients need regular eye exams to detect early changes. In many cases, treatment are available to prevent the loss of sight from diabetic damage.

Moreover, changes within the eye reflect the severity of diabetes in the rest of the body. A complete eye exam can reveal the patient's overall health status. The eye can literally be a window through which a physician can assess the health of the rest of the body.