IERG Abstracrt Book.indd - LV Prasad Eye Institute

108 Clinical Poster SessionsICP 031Hertels Exophthalmometry: Normative Data, and Assessment of Intra and InterObserver Variability in Indian PopulationSri Latha VantipalliBausch and Lomb School of Optometry, L V Prasad Eye Institute, Hyderabad, India.Purpose: To report normal exophthalmometric measurements (absolute and relative) inIndian population, and determine the intra and inter-observer variability in its measurementusing Hertel’s Exophthalmometry.Methods: Exophthalmometry was performed on 230 normal Indian adults by three trainedobservers using a single Hertels exophthalmometer. Two sets of readings were obtained by each,in a masked manner. Bar reading of the first observer was maintained by the other two. Interand intra-observer variability was assessed by calculating intraclass correlation coefficient.Results: Of the 230 normal Indian adults,49.5% were males and 50.5% were females. Meanage was 26.10 years (SD-9.81).Mean exophthalmometric reading was 15.4mm(SD 2.22) forright eye, and 16.3mm(SD 2.19) for the left .Relative exophthalmometry showed a significantvariation of 0.92mm (SD-1.14)between the two eyes (p