At Falcon Vision Centre, we are proud to offer optical coherence tomography scans (OCT scan). An OCT scan is a critical tool for early diagnosis of macular degeneration, glaucoma, retinal detachment, and diabetic retinal disease. An OCT eye exam is a non-invasive test that provides 3-D color-coded, cross sectional images of the retina to enable early detection and treatment of ocular disease that may develop without any noticeable symptoms.
The color-coded images provide a wealth of information to help your eye doctor measure the thickness of your retina and identify any optic nerve abnormalities.
The OCT scan uses a laser (without radiation) to obtain higher resolution images of the layers of the retina and optic nerve. With OCT, our optometrists can see each of the retina’s distinctive layers. This allows us to map and measure their thickness. These measurements help with diagnosis. They also provide treatment guidance for glaucoma and diseases of the retina. These retinal diseases include age-related macular degeneration (AMD) and diabetic eye disease.
OCT is useful in diagnosing many eye conditions, including:
- macular hole
- macular pucker
- macular edema
- age-related macular degeneration
- central serous retinopathy
- diabetic retinopathy
- vitreous traction
OCT is often used to evaluate disorders of the optic nerve as well. The OCT exam helps our optometrists see changes to the fibers of the optic nerve. For example, it can detect changes caused by glaucoma.
OCT relies on light waves. It cannot be used with conditions that interfere with light passing through the eye. These conditions include dense cataracts or significant bleeding in the vitreous.
At Falcon Vision Centre, our OCT device allows us to do Anterior Segment OCT as well. This allows us to assess cornea, angles, and corneal thickness.
What should I expect during an OCT exam?
The OCT scan uses light waves to create an image, similar to an ultrasound that uses sound waves to create an image. During the test, you will sit with your chin resting on a support. The OCT will scan each of your eyes, while you fix your gaze on a green target. As the laser scans the retina in each eye, you may notice a red line moving across your vision.
When should I have an OCT exam?
If you are over age 25, or at risk of developing ocular disease, your eye doctor may recommend an OCT exam as part of your annual eye exam. Having regular OCT scans will enable your doctor to compare the images from previous years to detect any abnormalities or thickening of retinal layers.
If you have been diagnosed with an ocular disease, an OCT scan will also provide the information needed to monitor treatment.
If you have any questions or concerns about your OCT exam, please contact us today.