This past week we have received our newest addition to the Draisin Vision Group Family~ our OCT! Optical Coherence Tomography (OCT) is one of the latest and greatest types of imaging technology for the eye. OCT is used for taking cross-sectional pictures of the retina, optic nerve and cornea. Each of the ten layers in the retina can be detected. OCT allows us to measure the thickness of each layer to aid in the early detection and diagnosis of retinal diseases and conditions. It is used to diagnose and follow treatment in certain eye conditions and diseases. Such conditions include age-related macular degeneration, pre-retinal membranes, macular swelling, macular holes, cystoid macular edema, central serous retinopathy, glaucoma, and optic nerve damage. We pledge to stay on the forefront of our profession through the newest technology and education available and we are very excited to bring this advanced imagining to the Draisin Vision Group!
What to expect at your visit with the OCT: The testing time is very short and non-invasive. You will be seated for the test facing the equipment, viewing at a small target in the equipment. We will use a special camera to take pictures of your inner eye. The images are transmitted to a computer for us to view and analyze.
The retina is a multi-layered sensory tissue that lines the back of the eye. It contains millions of photoreceptors that capture light rays and convert them into electrical impulses. These impulses travel along the optic nerve to the brain where they are turned into images. There are two types of photoreceptors in the retina: rods and cones. The retina contains approximately 6 million cones. The cones are contained in the macula, the portion of the retina responsible for central vision. They are most densely packed within the fovea, the very center portion of the macula. Cones function best in bright light and allow us to appreciate color.
There are approximately 125 million rods. They are spread throughout the peripheral retina and function best in dim lighting. The rods are responsible for peripheral and night vision. The OCT helps us to detect any type of disruption in the retinal layers secondary to pathology.