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Abstract #22153 Published in IGR 10-4
Optic disc area in Malaysian population
Ali NAM; Subrayan V; Reddy SCInternational Journal of Ophthalmology 2008; 8: 1514-1517
AIM: To evaluate the optic disc parameters in the three main ethnic groups of Malaysia (Malay, Chinese and Indian). Possible relationships between optic disc parameters and gender, intraocular pressure and axial length of eye were also studied. METHODS: The study included 244 eyes of 122 subjects (61 cases with open-angle glaucoma and 61 non-glaucomatous individuals) with clear ocular media. Magnification corrected measurements of optic disc diameters and area were done using Zeiss FF450 Plus fundus camera. Differences between the three ethnic groups were tested by using ANOVA. The association between factors such as gender, intraocular pressure and axial length of the eye, and the optic disc size was tested through Pearson's bivariate correlation analysis. RESULTS: The overall mean vertical optic disc diameter was (1.96 ± 0.20) mm, horizontal optic disc diameter was (1.84 ± 0.20) mm and optic disc area was (2.84 ± 0.56) mm2. Indians had larger optic disc area compared to Malay and Chinese. However, the difference was not statistically significant. CONCLUSION: Optic disc size is larger in Malaysian population than Caucasians. Among the three ethnic groups, Indians have the largest optic disc size without any statistical difference.
Dr. N.A.M. Ali, Department of Ophthalmology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia. nadiramali@hotmail.com
