Optical Coherence Tomography (OCT) is a new, noninvasive, noncontact, transpupillary imaging technology which can image retinal structures in vivo with a resolution of 5 to 8 microns, Cross-sectional images of the retina are produced using the optical backscattering of light in a fashion analogous to B- scan ultrasonography and cofocal microscopy. Cross-sectional images of the retina, is revolutionizing the early detection and treatment and greatly enhanced our quality of patient care.