Imaging Technology

At VRA, we utilize the most advanced retinal imaging available.

Optical Coherence Tomography (OCT)

Better known as an OCT, Optical Coherence Tomography uses light waves to obtain high-resolution pictures of the structural layers of the back of the eye. Being one of the latest advancements in imaging technology, OCTs provide color-coded, cross-sectional images of the retina, important in the early detection and treatment of eye disease, including age-related macular degeneration, retinal detachment, and diabetic retinopathy.

The OCT is a quick, noninvasive test. After your pupils are dilated, you will be asked to put your chin on the OCT’s chinrest and forehead against the support strap, hold steady, and focus on a target light while the technician takes images. The procedure does not typically involve pain.

Fluorescein Angiography

A Fluorescein angiography is an eye test that uses a special dye (Fluorescein) and a camera to check for proper blood flow in the retina and choroid, which are the layers in the back part of the eye. After your eyes are dilated, you will be asked to put your chin on the camera’s chinrest and forehead against the support strap and to hold steady. The technician will begin taking pictures of the back of your eye. The doctor will then inject the Fluorescein dye into a vein, usually at the end of your elbow. When the dye is injected, you may experience a warm sensation. Some people experience mild nausea, but it usually subsides rapidly. The technician will then take more pictures as the dye moves through the blood vessels in the retina and choroid. After the procedure, you will notice a darker color to your urine and a slight orange color to your skin. The procedure does not typically involve pain.

It is crucial that you inform the technician and doctor if you have allergies, particularly to iodine and/or if you are pregnant.

Fundus Photography

Fundus photography is used to assist in diagnosing, treating, and following eye disease. It involves taking pictures of the retina. After your pupils are dilated, you will be asked to put your chin on the camera’s chinrest and forehead against the support strap and to hold steady. The technician will then begin taking multiple pictures of your retina. The procedure does not typically involve pain.

Visual Field Analyzer

The Humphrey Visual Field is an automated diagnostic test used to determine your peripheral (side) vision while you are focusing on a central point. Visual field tests are done to assess the presence of blind spots (scotomas), which can be indicative of eye and brain diseases, such as due to a tumor or stroke.  Visual Field testing is simple and painless. You will be asked to put your chin on a chinrest and your forehead against the support strap. When one eye is being tested, the other will be covered. You will then be instructed to look at a central point and press a hand-held button if/when you see a flash of light in your peripheral vision. Random lights of varying intensities are flashed in your peripheral field of vision. The procedure does not typically involve pain.