Optical Coherence Tomography, or OCT for short, is sometimes referred to as a “3D” scan of the back of the eye. That’s because the OCT is able to take a digital scan of the back of the eye using and creates a 3D interactive model that the doctor can use to assess the retina and optic nerve.
How does OCT work?
OCT imaging works similarly to ultrasound except it uses light rays instead of sound waves to produce an image of the internal structures of your eye. This image is so precise the Optometrist can see individual cell layers that make up each part of the retina and optic nerve.
What to expect during an OCT?
An OCT is a non-invasive test that can be performed in about 10 minutes. During the exam, the technician will have you look at a target then, without touching your eye, take scans of the back of your eye.
Benefits of OCT testing
Doing an OCT provides your Optometrist with an in-depth image of the back of your eye down to the cellular level. This tool is great in identifying and monitoring a wide variety of ocular diseases which include glaucoma, diabetic retinopathy, and macular degeneration.
Age-Related Macular Degeneration
Diabetic Macular Edema
Do I need an OCT exam?
Your Optometrist will recommend an OCT if you have an increased risk of developing an ocular disease. Factors that can put you at a higher risk of eye disease include:
● Predisposed health conditions such as diabetes
● Family history
● Medications that can damage the retina