Please use this identifier to cite or link to this item:
|Title:||Prevalence of Plateau Iris in Primary Angle Closure Suspects. An Ultrasound Biomicroscopy Study||Authors:||Kumar, R.S.
|Issue Date:||2008||Citation:||Kumar, R.S., Baskaran, M., Lavanya, R., Sakata, L.M., Aung, T., Handa, S., Chew, P.T.K.., Friedman, D.S., Wong, H.-T. (2008). Prevalence of Plateau Iris in Primary Angle Closure Suspects. An Ultrasound Biomicroscopy Study. Ophthalmology 115 (3) : 430-434. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ophtha.2007.07.026||Abstract:||Purpose: To determine the prevalence of plateau iris in a cohort of primary angle closure suspects (PACSs) using ultrasound biomicroscopy (UBM). Design: Cross-sectional observational study. Participants: Subjects over the age of 50 years diagnosed as PACSs. Intervention: Subjects were randomized to undergo laser peripheral iridotomy (LPI) in one eye. Ultrasound biomicroscopy was performed before and a week after LPI. Main Outcome Measures: Ultrasound biomicroscopy images were qualitatively assessed using standardized criteria. Plateau iris was defined in a quadrant by the presence of an anteriorly directed ciliary body, an absent ciliary sulcus, a steep iris root from its point of insertion followed by a downward angulation from the corneoscleral wall, presence of a central flat iris plane, and irido-angle contact. At least 2 quadrants had to fulfil the above criteria for an eye to be defined as plateau iris. Results: Two hundred five subjects were enrolled; UBM images of 167 subjects were available for analysis. Plateau iris was found in 54 of 167 (32.3%) PACS eyes after LPI. Quadrantwise analysis showed that 44 of 167 (26.3%) eyes had plateau iris in 1 quadrant, 36 (21.5%) in 2 quadrants, 16 (9.5%) in 3 quadrants, and 2 (1.2%) in all 4 quadrants. Plateau iris was most commonly observed in the superior and inferior quadrants. Conclusions: Using standardized UBM criteria, plateau iris was found in about a third of PACS eyes after LPI. Prospective longitudinal studies are required to determine the clinical significance of this finding for the management of PACSs. © 2008 American Academy of Ophthalmology.||Source Title:||Ophthalmology||URI:||http://scholarbank.nus.edu.sg/handle/10635/26445||ISSN:||01616420||DOI:||10.1016/j.ophtha.2007.07.026|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 21, 2019
WEB OF SCIENCETM
checked on May 13, 2019
checked on May 12, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.