The Optical Coherence Tomographer (OCT) is a highly specific diagnostic instrument that provides images of a cross-section of the layers of specific tissues within the eye. The technology is similar to ultrasound technology but uses light rather than sound waves. This technology means our optometrists are able to detect ocular conditions sometimes well before the patient is aware that there is a problem.
A Posterior OCT allows the cell layers of the retina and optic nerve to be examined in great detail. Posterior segment OCT can detect early onset signs of retinal conditions such as macular oedema, diabetic retinopathy, macular degeneration and macular hole. This allows for early treatment of these conditions which may improve the success rate of the treatment and minimise loss of vision.
Similarly anterior segment OCT allows close examination of the cornea, iris, and crystalline lens and can detect subtle changes in the corneal surface, the thickness profile of the cornea and the shape and curvature of the corneal surface. This information is particularly useful in the management of corneal disease such as Fuch’s Dystrophy or progressive corneal disorders such as keratoconus.
The OCT is a non-invasive technology. It allows for the imaging of specific tissues in the eye. The only discomfort that you may experience is from the flash of light as it scans the tissue. The procedure takes only a few minutes and the results are available immediately, which allows our optometrists to discuss the results with you and to arrange referral to ophthalmology if necessary.