What is an OCT and what does it entail?


What is Optical Coherence Tomography?

Optical Coherence Tomography or OCT is the latest advancement in imaging technology. Similar to an ultrasound, the OCT uses light to take high-resolution cross-section pictures of the retina.

What can it be used for?

With the images that the OCT provides, your Optometrist will be able to use these to help with their diagnosis. These images will show if there are signs of an eye condition, like Macular Degeneration, Glaucoma, etc. The Optometrists use the image to measure the thickness of the retina and to see if there are any irregularities. We can also use the OCT to make a 3D image of your retina like below;







What happens during the OCT?

During your appointment, either an Optical Assistant or your Optometrist will perform your OCT. You will be asked to sit comfortably, and place your chin and forehead against the rests of the machine and to keep you nice and still so that we can get the best images possible. There will be about four scans taken of each eye. The first three scans will mainly be focusing on your retina. The last scan will be taken of your optic disc. These scans will vary from 1-3 minutes each.

After your OCT your Optometrist will keep the results on your file so that they can be used as a baseline for future reference on the progression of your eye health.

Click here to watch our video to learn more

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