[Research progress of the role of iris characteristics in angle closure]

Glaucoma is a kind of optic nerve degenerative disease characterized by both depressed atrophy of optic nerve and visual field defect. In Asia, the number of patients with primary Angle closure glaucoma (PACG) is increasing year by year, posing serious impact on the life quality of patients. Angle closure is the pathogenic basis of PACG. Early identification of the risk factors for Angle closure and control on its progression are crucial to the prognosis of PACG. With the continuous in-depth study of the iris in recent years, it has been found that the changes in iris volume are also important dynamic risk factor for PACG. This paper summarizes the latest research results of both domestic and overseas, describes and summarizes the histology, biological characteristics, surface features, vascular configuration and genomics of the iris, and further analyzes the role of iris characteristics in angle closure in details, in order to provide a reference for the clinical diagnosis and research work.青光眼是一类以视神经凹陷性萎缩和视野缺损为共同特征的视神经退行性病变。在亚洲原发性闭角型青光眼（PACG）的患病人数逐年递增并严重影响患者的生活质量，房角关闭是PACG的致病基础，尽早识别房角关闭的风险因素并减缓其进展对于PACG预后具有至关重要的作用。随着近年对虹膜的研究不断深入，发现虹膜容积变化亦是PACG发生的重要动态风险因素。本文汇总国内外最新研究结果，分别从虹膜的组织学、生物特性、表面特征、血管结构及基因组学等方面进行总结，详细分析虹膜特性在房角关闭中的作用，以期为临床诊疗和研究工作提供参考。.