Glaucoma-I Free Papers - aioseducation

70th AIOC Proceedings, Cochin 2012patients. It uses low coherence near infrared light (850 nm) from a superluminescent diode and subsequent back scattering of the retina. It generatesposterior segment measurement with an axial resolution of 8–10 microns.We hereby compare the cup disc ratio with an ophthalmoscope and OCT tofind the usefulness of OCT in detecting glaucoma and the reliability of theophthalmoscopic examination.284MATERIALS AND METHODSThis is a prospective study. It includes 200 eyes of 100 patients referred toglaucoma services during the period of December 2010 to March 2011. Thepatients were divided into two groups namely glaucoma suspects (Group A)and established glaucomas (Group B).Group A had 96 eyes of 48 patients. Out of them 28 were male and 20 werefemale. Two eyes of Group A, OCT was not possible due to poor co-operation.Effectively 94 eyes were taken for comparison.104 eyes of 52 patients of Group B. Out of them 29 were male and 23 werefemale. In Group B, OCT was not possible in 19 eyes (poor vision) and 5 eyes(poor media clarity) respectively. Effectively 80 eyes were taken for comparisonThe difference of cup disc ratio between direct ophthalmoscope and OCTof values less than 0.1 is considered comparable and values more than 0.1 isconsidered increased.In Group A, 58 eyes showed increased cup disc ratio in OCT as compared towhen examined with an ophthalmoscope. In rest of the 36 eyes, the cup discratio was comparable to that of OCT. 42 eyes of Group B showed increased cupdisc ratio when compared to ophthalmoscopic examination. Rest of the 38 eyeswas similar to values obtained by OCT.OCT overestimates the cup disc ratio in 61% of the glaucoma suspects and52% of established glaucoma respectively. Thus clinical examination is moreimportant. So OCT can be used only as an adjunct in diagnosing glaucoma.In glaucoma screening, for mass population fundus can be examined withdirect ophthalmoscope. All the primary health centres can be provided withan ophthalmoscope and medical officers can be trained to identify increasedcup disc ratio so that the cases can be referred to higher centres for completeglaucoma evaluation.• If you diagnose glaucoma early you can treat it early,• If you treat it early you can slow the rate of progression,• If you slow the rate of progression you can prevent blindness• Prof. Weinreb