Population Prevalence of Tilted and Torted Optic Discs Among an Adult Chinese Population in Singapore
Population Prevalence of Tilted and Torted Optic Discs Among an Adult Chinese Population in Singapore
复制标题
DOI：
10.1001/archophthalmol.2009.134
复制
发表时间：
2009-07-01
影响因子：
--
通讯作者：
Aung, Tin
中科院分区：
文献类型：
--
作者：
How, Alicia C. S.;Tan, Gavin S. W.;Aung, Tin
目的：为了确定倾斜和扭曲的视盘和相关的危险因素在新加坡的中国成年人中的患病率。方法：作为人口为基础的调查的一部分，视盘立体照片的双眼，左眼进行了分析，使用成像软件。视盘倾斜定义为倾斜指数（视盘最小直径与最大直径之比）小于0.75。以视盘最大径与垂直径的夹角为视盘倾斜角，视倾斜角大于15 °者为视盘扭曲。结果：739例中视盘倾斜26例（3.5%），视盘扭曲478例（64.7%）。视盘倾斜的26只眼中有23只眼（88.5% [95%置信区间，69.9%-97.6%]）存在近视，而无视盘倾斜的661只眼中有211只眼（31.9% [28.4%-35.6%]）存在近视（P <0.001）。在多变量分析中，近视（等效球镜）是视盘倾斜的重要危险因素（P <0.001）。倾斜指数与角膜散光或柱镜屈光不正无关。17眼（65.4%）的视盘倾斜有视盘形态异常，但没有cumacomaty.Conclusions：视盘倾斜的患病率在中国人群中为3.5%。视盘倾斜与近视有关，但与青光眼无关。
Objective: To determine the prevalence of tilted and torted optic discs and associated risk factors among Chinese adults in Singapore.Methods: As part of a population-based survey, optic disc stereophotographs of both eyes were obtained, and left eyes were analyzed using imaging software. A tilted optic disc was defined as an index of tilt (ratio of minimum to maximum optic disc diameter) less than 0.75. The angle of tilt was defined as the angle between the maximum and vertical optic disc diameter, and optic discs were graded as torted if the angle of tilt exceeded 15.Results: Twenty-six of 739 subjects (3.5%) had tilted optic discs, and 478 (64.7%) had torted optic discs. Myopia was present in 23 of 26 eyes (88.5% [95% confidence interval, 69.9%-97.6%]) with tilted optic discs and in 211 of 661 eyes (31.9% [28.4%-35.6%]) without tilted optic discs (P < .001). On multivariate analysis, myopia (spherical equivalent) was a significant risk factor for tilted optic discs (P < .001). Index of tilt was not associated with corneal astigmatism or with cylindrical refractive error. Seventeen eyes (65.4%) with tilted optic discs had an optic disc morphologic abnormality, but none were glaucomatous.Conclusions: The prevalence of tilted optic discs among this Chinese population was 3.5%. Tilted optic discs were associated with myopia but not with glaucoma.