Optical coherence tomography in glaucoma-I

Abstract

It is a well-established fact that more than 40% ganglion cells are lost before the white-on-white perimetry shows defects. Hence, the importance of modalities which can image the structures of optic nerve and surrounding retinal nerve fiber layer in the early diagnosis of glaucoma cannot be overemphasized. However, the appropriate interpretation of these imaging modalities is of paramount importance. Out of the three machines such as HRT, scanning laser polarimeter (GDx VCC), and the OCT, the OCT has made a remarkable progress and can be incorporated judiciously in the clinical practice of glaucoma management. The purpose of this article is to explain the interpretation and its clinical application in an appropriate manner in the management of patients with glaucoma.

Keywords

• Glaucoma
• optical coherence tomographer
• retinal nerve fiber layer