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Abstract #18036 Published in IGR 9-2
A method of measuring anterior chamber volume using the anterior segment optical coherence tomographer and specialized software
Wang N; Wang B; Zhai G; Lei K; Wang L; Congdon NAmerican Journal of Ophthalmology 2007; 143: 879-881
PURPOSE: To describe and evaluate a new method for measuring anterior chamber volume (ACV). DESIGN: Observational case series. METHODS: The authors measured ACV using the anterior chamber (AC) optical coherence tomographer (OCT) and applied image-processing software developed by them. Repeatability was evaluated. The ACV was measured in patient groups with normal ACs, shallow ACs, and deep ACs. The volume difference before and after laser peripheral iridotomy (LPI) was analyzed for the shallow and deep groups. RESULTS: Coefficients of repeatability for intraoperator, interoperator, and interimage measurements were 0.406%, 0.958%, and 0.851%, respectively. The limits of agreement for intraoperator and interoperator measurement were -0.911 μl to 1.343 μl and -7.875 μl to -2.463 μl, respectively. There were significant ACV differences in normal, shallow, and deep AC eyes (P < .001) and before and after LPI in shallow AC (P < .001) and deep AC (P = .008) eyes. CONCLUSIONS: The ACV values obtained by this method were repeatable and in accord with clinical observation.
Dr. N. Wang, Tongren Ophthalmic Center, Beijing Tongren Hospital, Capital University of Medical Sciences, Beijing, China. wbsod@vip.sina.com
Classification:
6.9.2.1 Anterior (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis > 6.9.2 Optical coherence tomography)
