The retina, in the back of the eye, is susceptible to a variety of diseases. Early detection of any retinal abnormality is crucial. Common retinal diseases such as macular degeneration, diabetic eye disease, and hypertension causing hypertensive retinopathy can be evaluated by retinal photography. Photographs of the optic nerve are valuable in following glaucoma and the response to treatment. As glaucomatous damage progresses, increase in the central optic nerve area, called the cup, increases. These conditions often develop without symptoms, and can progress leading to serious health and eye problems including partial or total blindness. Dr. Rodriguez will then compare previous images side-by-side on the computer screen to detect change or progression. These images can also be e-mailed to other physicians for consultation.