Patients with diabetes are at risk for developing diabetic retinopathy and other serious eye conditions, so most should see an Ophthalmologist every six months. The diabetic dilated exam includes the same steps as a regular eye exam. An ophthalmic technician will ask you about your blood sugar and A1C measurements. There may also be an additional test performed called Optical Coherence Tomography or OCT. The OCT is a noninvasive imaging procedure that can provide measurements of the back surface of the eye, called the retina. This test is important because it can detect damage to the back portions of the eye even before the patient notices any vision changes.