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Title: Lens vault, thickness, and position in chinese subjects with angle closure
Authors: Nongpiur, M.E.
He, M.
Amerasinghe, N.
Friedman, D.S.
Tay, W.-T.
Baskaran, M.
Smith, S.D.
Wong, T.Y. 
Aung, T.
Issue Date: Mar-2011
Citation: Nongpiur, M.E., He, M., Amerasinghe, N., Friedman, D.S., Tay, W.-T., Baskaran, M., Smith, S.D., Wong, T.Y., Aung, T. (2011-03). Lens vault, thickness, and position in chinese subjects with angle closure. Ophthalmology 118 (3) : 474-479. ScholarBank@NUS Repository.
Abstract: Purpose To investigate the association of lens parametersspecifically, lens vault (LV), lens thickness (LT), and lens position (LP)with angle closure. Design Prospective, comparative study. Participants One hundred two Chinese subjects with angle closure (consisting of primary angle closure, primary angle-closure glaucoma, and previous acute primary angle closure) attending a glaucoma clinic and 176 normal Chinese subjects with open angles and no evidence of glaucoma recruited from an ongoing population-based cross-sectional study. Methods All participants underwent gonioscopy and anterior-segment optical coherence tomography (AS OCT; Carl Zeiss Meditec, Dublin, CA). Customized software was used to measure LV, defined as the perpendicular distance between the anterior pole of the crystalline lens and the horizontal line joining the 2 scleral spurs, on horizontal AS OCT scans. A-scan biometry (US-800; Nidek Co, Ltd, Tokyo, Japan) was used to measures LT and to calculate LP (defined as anterior chamber depth [ACD] +1/2 LT) and relative LP (RLP; defined as LP/axial length [AL]). Main Outcome Measures Lens parameters and angle closure. Results Significant differences between angle-closure and normal eyes were found for LV (901±265 vs. 316±272 μm; P
Source Title: Ophthalmology
ISSN: 01616420
DOI: 10.1016/j.ophtha.2010.07.025
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