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Title: Association of narrow angles with anterior chamber area and volume measured with anterior-segment optical coherence tomography
Authors: Wu, R.-Y.
Nongpiur, M.E.
He, M.-G.
Sakata, L.M.
Friedman, D.S.
Chan, Y.-H.
Lavanya, R.
Wong, T.-Y. 
Aung, T.
Issue Date: May-2011
Citation: Wu, R.-Y., Nongpiur, M.E., He, M.-G., Sakata, L.M., Friedman, D.S., Chan, Y.-H., Lavanya, R., Wong, T.-Y., Aung, T. (2011-05). Association of narrow angles with anterior chamber area and volume measured with anterior-segment optical coherence tomography. Archives of Ophthalmology 129 (5) : 569-574. ScholarBank@NUS Repository.
Abstract: Objectives: To describe the measurement of anterior chamber area and anterior chamber volume by anteriorsegment optical coherence tomography and to investigate the association of these parameters with the presence of narrow angles. Methods: This was a cross-sectional study of subjects aged at least 50 years without ophthalmic symptoms recruited from a community clinic. All participants underwent standardized ocular examination and anterior-segment optical coherence tomography. Customized software was used to measure anterior chamber area (cross-sectional area bounded by the corneal endothelium, anterior surface of iris, and lens within the pupil) and anterior chamber volume (calculated by rotating the anterior chamber area 360° around a vertical axis through the midpoint of the anterior chamber area). An eye was considered to have narrow angles if the posterior pigmented trabecular meshwork was not visible for at least 180° on gonioscopy with the eye in the primary position. Results: A total of 1922 subjects were included in the final analyses, 317 (16.5%) of whom had narrow angles. Mean anterior chamber area (15.6 vs 21.1 mm2; P
Source Title: Archives of Ophthalmology
ISSN: 00039950
DOI: 10.1001/archophthalmol.2011.68
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