Optical Coherence Tomography (OCT) is a non-invasive, non-contact, transpupillary imaging technology which uses cross-sectional images of the retina and optic nerve head. These images are produced using the optical back-scattering of light in a fashion similar to B-scan ultrasonography.
OCT has the capability of measuring the retinal nerve fiber layer thickness in glaucoma and other diseases of the optic nerve. The nerve fibre layer thickness values are compared to a normative database based on age, gender, and nationality.
This test is performed routinely and each test can be compared with the previous tests to determine progression over time. This is a part of our standard eye exam (extra fee is applied for OHIP-patients).