Role of Optical Coherence Tomography in Macular Disorders
Achyut N. Pandey *
Department of Ophthalmology, Govt. Medical College, Srinagar Garhwal, Uttarakhand, India
Amit Vikram Raina
Department of Ophthalmology, Govt. Medical College, Srinagar Garhwal, Uttarakhand, India
P. D. Sharma
Department of Ophthalmology, Govt. Medical College, Srinagar Garhwal, Uttarakhand, India
*Author to whom correspondence should be addressed.
Abstract
Optical coherence tomography (OCT) is an emerging technology for performing high-resolution cross-sectional imaging. OCT is analogous to ultrasound imaging, except that it uses light instead of sound. OCT can provide cross-sectional images of tissue structure on the micron scale in situ and in real time.
High resolution cross-sectional imaging of the retina is useful for identifying, monitoring and quantitatively assessing macular diseases. Optical coherence tomography (OCT) uses low coherence or white light interferometer to perform high resolution measurements and imaging. Optical coherence tomography (OCT) has a great potential as a diagnostic and research tool. However it has its own limitations in the presence of media opacities like vitreous hemorrhage, corneal edema and dense cataract. Hence, an attempt has been made to study the role of Optical coherence tomography in diagnosis of macular disorders.
Keywords: Photorecepters, macular hole, epiretinal membrane, interferometry