What is an OCT Scan?

Q: My eye doctor suggested I have an OCT scan done of the back of my eyes. What is this and why would she have recommended this to me?

A: Optical Coherence Tomography (OCT) has become a critical tool in the fight against many eye diseases, especially the top three known to cause blindness – macular degeneration, diabetic retinopathy and glaucoma. Named as one of the top ten medical innovations, OCT is a non-invasive technology used for imaging the retina, the multi-layered sensory tissue that lines the eye. This instrument allows the doctor to view a high resolution cross-section of ocular tissues, as opposed to a head-on view as with a retinal photograph. Similar to a CT scan of internal organs, an OCT uses light scatter to rapidly scan the eye and create a pixel representation of the ten anatomic layers within the retina; each of these layers can then be differentiated and their individual thicknesses measured. By comparing the thickness of the layers measured by the OCT scan against the normal thickness of healthy retinal layers, your optometrist can determine if a retinal disease or eye condition exists in the eye.

An OCT scan has the ability to detect problems in the eye prior to any symptoms being present. It is also crucial for early treatment and dramatically improves the success of these treatments, especially in rapidly progressing eye diseases such as wet macular degeneration. And since the scan is non-invasive and quick, serial OCT scans allow optometrists to monitor for changes in eye conditions which greatly enhances the quality of patient care.

Even healthy individuals with no known ocular disease will benefit from a baseline OCT scan. This will allow the optometrist to monitor for ocular changes that could not otherwise be detected with other technologies. Dr. Pozzer is always accepting new patients...come in for your scan today!


Dr. Kristyn Pozzer


Millcroft Shopping Centre
2080 Appleby Line, Unit E6
Burlington, Ontario, L7L6M6
Tel: (905) 319-1066