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[The prevalence and its screening methods of primary open angle glaucoma in defined population-based study of rural and urban in Beijing].

Abstract

OBJECTIVE

The purpose of the study is to determine the prevalence of primary open-angle glaucoma (POAG) in persons aged 40 or above in Beijing, China.

METHODS

From June 2001 to October 2001, the screening population was identified by a door-to-door census in five metropolitan resident areas in the north of Beijing and three villages in a county south to Beijing. The screening included visual acuity, frequency doubling perimetry (FDP, C-20 screening program), non-contact tonometry, slit lamp microscopy, anterior chamber depth (Van Herick method), and fundus photography. The suspect glaucoma and definite glaucoma patients were asked to have an examination of Octopus 1-2-3 perimetry (G1X TOP threshold program), repeat tonometry, gonioscopy and fundus stereo-photography at Beijing Tongren Hospital.

RESULTS

There were 4451 subjects who were examined at the study sites. The response rates in rural and urban were 79.58% and 87.13%, respectively. In this 40 years-old or above population, the prevalences of POAG were 1.97% in rural men, 2.07% in urban men, 1.04% in rural women and 1.42% in urban women. In this study, 92.30% POAG patients in rural and 87.30% POAG patients in urban were new diagnosed cases. The prevalence of POAG increased with age and the change was exponential. In 50% POAG patients first IOP measurement was less than 21 mm Hg (1 mm Hg = 0.133 kPa). The prevalence of monocular eye blindness was 15.40% and 10.90% in rural and urban, respectively.

CONCLUSIONS

Owing to use fundus photography and integrated evaluation of optic disc, it is possible to diagnose in earlier stage of POAG. This study identifies more patients with POAG than any previous population-based studies of China, and is similar to other studies of Asia such as in India and Singapore. The reason of lower POAG prevalence in rural women than in urban may be that the anterior chamber depth of rural women is shallower than that of urban women. It may cause difficult to differentiate the chronic primary angle closure glaucoma from POAG at screening sites, so the part POAG patients may be included in primary angle closure glaucoma patients.

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  • Authors+Show Affiliations

    ,

    Beijing Institute of Ophthalmology, Beijing Tongren Ophthalmic Center, Capital University of Medical Sciences, Beijing 100730, China. xuliang@public.bta.net.cn

    , , , , , , , , , , , ,

    Source

    MeSH

    Adult
    Age Distribution
    Aged
    Aged, 80 and over
    China
    Female
    Fluorescein Angiography
    Glaucoma, Open-Angle
    Humans
    Male
    Middle Aged
    Prevalence
    Rural Population
    Sex Distribution
    Tonometry, Ocular
    Urban Population
    Vision Screening

    Pub Type(s)

    English Abstract
    Journal Article

    Language

    chi

    PubMed ID

    15634477

    Citation

    Xu, Liang, et al. "[The Prevalence and Its Screening Methods of Primary Open Angle Glaucoma in Defined Population-based Study of Rural and Urban in Beijing]." [Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology, vol. 40, no. 11, 2004, pp. 726-32.
    Xu L, Chen JH, Li JJ, et al. [The prevalence and its screening methods of primary open angle glaucoma in defined population-based study of rural and urban in Beijing]. Zhonghua Yan Ke Za Zhi. 2004;40(11):726-32.
    Xu, L., Chen, J. H., Li, J. J., Luo, L., Yang, H., Zhang, R. X., ... Ma, B. R. (2004). [The prevalence and its screening methods of primary open angle glaucoma in defined population-based study of rural and urban in Beijing]. [Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology, 40(11), pp. 726-32.
    Xu L, et al. [The Prevalence and Its Screening Methods of Primary Open Angle Glaucoma in Defined Population-based Study of Rural and Urban in Beijing]. Zhonghua Yan Ke Za Zhi. 2004;40(11):726-32. PubMed PMID: 15634477.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - [The prevalence and its screening methods of primary open angle glaucoma in defined population-based study of rural and urban in Beijing]. AU - Xu,Liang, AU - Chen,Jian-Hua, AU - Li,Jian-Jun, AU - Luo,Ling, AU - Yang,Hua, AU - Zhang,Rong-Xiu, AU - Sun,Xiu-Ying, AU - Zheng,Yuan-Yuan, AU - Song,Wei-Xian, AU - Shi,Yu-Ying, AU - Zhang,Shi-Yuan, AU - Sun,Bao-Chen, AU - Zhao,Jia-Liang, AU - Ma,Bin-Rong, PY - 2005/1/7/pubmed PY - 2006/12/15/medline PY - 2005/1/7/entrez SP - 726 EP - 32 JF - [Zhonghua yan ke za zhi] Chinese journal of ophthalmology JO - Zhonghua Yan Ke Za Zhi VL - 40 IS - 11 N2 - OBJECTIVE: The purpose of the study is to determine the prevalence of primary open-angle glaucoma (POAG) in persons aged 40 or above in Beijing, China. METHODS: From June 2001 to October 2001, the screening population was identified by a door-to-door census in five metropolitan resident areas in the north of Beijing and three villages in a county south to Beijing. The screening included visual acuity, frequency doubling perimetry (FDP, C-20 screening program), non-contact tonometry, slit lamp microscopy, anterior chamber depth (Van Herick method), and fundus photography. The suspect glaucoma and definite glaucoma patients were asked to have an examination of Octopus 1-2-3 perimetry (G1X TOP threshold program), repeat tonometry, gonioscopy and fundus stereo-photography at Beijing Tongren Hospital. RESULTS: There were 4451 subjects who were examined at the study sites. The response rates in rural and urban were 79.58% and 87.13%, respectively. In this 40 years-old or above population, the prevalences of POAG were 1.97% in rural men, 2.07% in urban men, 1.04% in rural women and 1.42% in urban women. In this study, 92.30% POAG patients in rural and 87.30% POAG patients in urban were new diagnosed cases. The prevalence of POAG increased with age and the change was exponential. In 50% POAG patients first IOP measurement was less than 21 mm Hg (1 mm Hg = 0.133 kPa). The prevalence of monocular eye blindness was 15.40% and 10.90% in rural and urban, respectively. CONCLUSIONS: Owing to use fundus photography and integrated evaluation of optic disc, it is possible to diagnose in earlier stage of POAG. This study identifies more patients with POAG than any previous population-based studies of China, and is similar to other studies of Asia such as in India and Singapore. The reason of lower POAG prevalence in rural women than in urban may be that the anterior chamber depth of rural women is shallower than that of urban women. It may cause difficult to differentiate the chronic primary angle closure glaucoma from POAG at screening sites, so the part POAG patients may be included in primary angle closure glaucoma patients. SN - 0412-4081 UR - https://www.unboundmedicine.com/medline/citation/15634477/[The_prevalence_and_its_screening_methods_of_primary_open_angle_glaucoma_in_defined_population_based_study_of_rural_and_urban_in_Beijing]_ L2 - http://journal.yiigle.com/LinkIn.do?linkin_type=pubmed&issn=0412-4081&year=2004&vol=40&issue=11&fpage=726 DB - PRIME DP - Unbound Medicine ER -