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YINGJIE LI, Ye Elaine Wang, Mary Qiu, Dandan Wang, Mingguang He, Shan Lin; Plateau Iris among American Caucasians, American Chinese, and Mainland Chinese. Invest. Ophthalmol. Vis. Sci. 2013;54(15):1874.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the prevalence and common risk factors of plateau iris configuration among American Caucasians, American Chinese, and mainland Chinese subjects using ultrasound biomicroscopy.
This study included three gender- and age-matched cohorts of 117 American Caucasians, 129 American Chinese and 112 mainland Chinese subjects. One eye was examined per subjects. Eyes with plateau iris configuration were defined as having at least 2 quadrants with the presence of 1) anteriorly directed ciliary body, 2) absent ciliary sulcus, and 3) central flat iris plane. All subjects underwent A-scan biometry and auto-refraction.
Plateau iris configuration was found in 28 (23.9%) American Caucasians, 29 (22.5%) American Chinese, and 23 (20.5%) mainland Chinese subjects. No significant difference in the prevalence of plateau iris configuration was observed among the three cohorts (P=0.825, χ2 test). Spherical equivalent was significantly associated with plateau iris configuration (coefficient 0.233, Hierarchical Cluster Analysis).
The prevalence of plateau iris did not differ among American Caucasians, American Chinese and mainland Chinese subjects. There is a lower rate of plateau iris among myopic eyes compared to emmetropic eyes.
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