OCT Scans For Retina

OCT or optical coherence tomography is a non-invasive test used for imaging the eyes. It employs light waves to capture cross-sectional images of the retina. It utilizes a concept called inferometry and creates a cross-sectional map of retina that is accurate to within at least 10-15 microns.

It is used for diagnosis of many retinal disease, especially when the media is clear. Generally, the lesions in macula can be more easily imaged than the lesions in the mid and far periphery. It is helpful in deiagnosing problems, such as presence of a macular hole, vitreomacular traction, detachments of the neurosensory retina, macular edema and exudates, macular pucker, detachments of retinal pigment epithelium, retinoschisis, pachychoroid, and choroidal tumors. Sometimes, using only OCT, a diagnosis can be made. In other cases, such as disorders of retinal vessel, other tests may have to be done.