title: Association between Myopia, Biometry and Occludable Angle: The Jiangning Eye Study.
abstract: BACKGROUND
  Myopia subjects usually have long axial lengths and are predisposed to deep anterior chamber depths and open angles. Jiangning eye study is a randomized, population based study in Shanghai to determine whether myopia has an effect on the prevalence of occludable angles.
  
  
  METHODS
  A total of 2478 residents aged 50 years and over were randomly selected, and 2044 (82.5%) individuals of them participated in ophthalmic examinations between November 2012 and February 2013. Eye examinations included autorefraction, noncontact tonometry, measurement of axial length, anterior chamber depth, lens thickness and spectral domain optical coherence tomography.
  
  
  RESULTS
  The crude prevalences of iris trabecular meshwork contact in Jiangning Chinese individuals with myopia, emmetropia, and hyperopia are 1.25%, 6.44%, and 7.43%, respectively. There is also iris trabecular meshwork contact and shallow anterior chamber depth in myopia subjects even with long axial lengths.
  
  
  CONCLUSIONS
  The prevalence of iris trabecular meshwork contact in myopia subjects is lower than their emmetropia or hyperopia counterparts. Axial length is an important factor associate with occludable angle.
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.|Department of Ophthalmology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, P. R. China.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Hehua
authors.initials: H
authors.lastname: Ye
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Xuan
authors.initials: X
authors.lastname: Cai
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Yu
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Siyi
authors.initials: S
authors.lastname: Yu
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Tianyu
authors.initials: T
authors.lastname: Wang
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Wuyi
authors.initials: W
authors.lastname: Lu
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Ophthalmology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
authors.forename: Peiquan
authors.initials: P
authors.lastname: Zhao
mesh_terms: D000368:Aged; D000867:Anterior Chamber / Q000000981:diagnostic imaging / Q000502:physiology; D058452:Axial Length, Eye / Q000000981:diagnostic imaging / Q000502:physiology; D001699:Biometry; D003430:Cross-Sectional Studies; D058453:Emmetropia / Q000502:physiology; D005260:Female; D006801:Humans; D006956:Hyperopia / Q000175:diagnosis / Q000453:epidemiology; D007498:Iris / Q000000981:diagnostic imaging / Q000502:physiology; D007908:Lens, Crystalline / Q000000981:diagnostic imaging / Q000502:physiology; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000175:diagnosis* / Q000453:epidemiology; D016017:Odds Ratio; D015995:Prevalence; D012307:Risk Factors; D041623:Tomography, Optical Coherence; D014129:Trabecular Meshwork / Q000000981:diagnostic imaging / Q000502:physiology