Comparison Of Results Of Optic Disc Analysis Using Stereoscopic Biomicroscopy, Stereo Fundus Photography and Optical Coherence Tomography

Aim – To compare the results of optic disc analysis using optical coherence tomography, fundus photography and stereoscopic biomicroscopy. Materials & Methods – A comparative, observational case series and interobserver variability study in which 2 groups of patients were analysed by all the 3 methods. One group had primary open angle glaucoma patients and the other group were patients undergoing retinal evaluation. Stereo fundus photography and stereo biomicroscopy were performed using 90D lens while optical coherence tomography was performed using stratus OCT after dilating the pupil. Results – 50% cases showed good correlation between all the 3 methods. Optical coherence tomography showed a higher value indicating the requirement to do optical coherence tomography in all patients to detect the actual cup disc ratio which will help us to detect glaucoma cases earlier and to treat them, well before axonal loss occurs. The optic disc analysis results were confirmed by two people who assessed the optic disc separately to avoid the inter observer bias.