Optical Coherence Tomography (OCT)

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Optical coherence tomography (OCT) is a non-invasive imaging test. OCT uses light waves to take cross-section pictures of your retina.  An OCT scan is the latest advancement in imaging technology for the eye. This diagnostic technique employs light waves to achieve high resolution pictures of the structural layers of the back of the eye.

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It is a scanning laser used to analyze the layers of the retina and optic nerve for any signs of eye disease, similar to a CT scan. With an OCT scan, doctors are provided with color-coded, cross-sectional images of the retina. These detailed images are revolutionizing early detection and treatment of eye conditions such as wet and dry age-related macular degeneration, glaucoma, retinal detachment, and diabetic retinopathy.

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An OCT scan is a non-invasive, painless test. It is performed in about 5 - 10 minutes. To prepare you for an OCT exam, your ophthalmologist may or may not put dilating eye drops in your eyes. These drops widen your pupil and make it easier to examine the retina. You will sit in front of the OCT machine and rest your head on a support to keep it motionless. The equipment will then scan your eye without touching it. Scanning takes about 5 – 10 minutes. If your eyes were dilated, they may be sensitive to light for several hours after the exam.

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