Frequency and associated factors of structural progression of open-angle glaucoma in the Beijing Eye Study
- 1Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital University of Medical Science, Beijing, China
- 2Department of Ophthalmology, 306th Hospital of PLA, Beijing, China
- 3Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University Heidelberg, Germany
- Correspondence to Dr Professor Liang Xu, Beijing Institute of Ophthalmology, 17 Hougou Lane, Chong Wen Men, 100005 Beijing, China;
Contributors All the authors were involved in: (1) Substantial contributions to conception and design, acquisition of data, or analysis and interpretation of data; (2) Drafting the article or revising it critically for important intellectual content; and (3) Final approval of the version to be published.
- Accepted 12 February 2012
- Published Online First 9 March 2012
Background To examine factors associated with progression of open-angle glaucoma in a population-based setting.
Methods The population-based Beijing Eye Study, which included 4439 subjects with an age of 40+ years in the year 2001, was repeated in 2006. Optic disc photographs of the baseline examination versus follow-up examination were compared.
Results Out of 111 open-angle glaucoma patients examined in 2001, 77 (69%) subjects participated in the follow-up examination and 16 (21%) eyes showed glaucoma progression. Glaucoma progression was associated with smaller rim area (p=0.001), larger β zone (p=0.037), higher frequency of β zone increase during follow-up (p=0.01), higher prevalence of disc haemorrhages (p=0.01) and higher single intraocular pressure (p=0.04). In multiple regression analysis, only smaller rim area remained significantly associated with glaucoma progression. Glaucoma progression was not associated with optic disc size (p=0.70), mean blood pressure (p=0.43), ocular perfusion pressure (p=0.96), retinal vessel diameter and retinal microvascular abnormalities (all p>0.10), prevalence of diabetes mellitus (p=0.75) and arterial hypertension (p=0.26), prevalence of dyslipidaemia (p=0.28), refractive error (p=0.69), and central corneal thickness (p=0.97).
Conclusions In a population-based setting in adult Chinese, factors showing an association with open-angle glaucoma progression were an advanced stage of the disease (ie, small rim), presence of disc haemorrhages, larger area of β zone and higher frequency of β zone increase, and higher intraocular pressure. Glaucoma progression was not significantly associated with optic disc size, central corneal thickness, retinal vessel diameter and retinal microvascular abnormalities, and systemic diseases such as diabetes mellitus and arterial hypertension.
- Glaucoma progression
- open-angle glaucoma
- neuroretinal rim
- intraocular pressure
- Beijing Eye Study
- public health
- optic nerve
Funding This research received a grant from the National Key Laboratory Fund, Beijing, China.
Competing interests None.
Ethics approval Approval provided by theMedical Ethics Committee of the Beijing Tongren Hospital.
Provenance and peer review Not commissioned; externally peer reviewed.