Each of the ten layers in the retina can be detected. OCT allows a doctor to measure the thickness of each layer to aid in the early detection and diagnosis of retinal diseases and conditions. Such conditions include age-related macular degeneration, diabetic retinopathy, and many others.
Detailed information can also be obtained about he optic nerve. OCT allows a doctor to measure the thickness and configuration of the optic nerve to aid in the early detection and diagnosis of optic nerve disorders. Such conditions include glaucoma, optic neuritis, papilledema (optic nerve swelling that may be caused by things such as brain tumors or other conditions) and many others.
There is no special preparation for this test. You may have your pupils dilated for this test but many times this is not necessary.
The testing time is very short. You will be seated for the test. Your face will be stabilized with a positioning device during the test. The technician will use a special camera to take pictures of your inner eye. The images are transmitted to a computer for your doctor to view.