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Abstract #13308 Published in IGR 8-1
Epidemiology of glaucoma in a rural population in Shaanxi Province
Ren B-C; He Y; Chen L; Yang J-G; Sun N-XInternational Journal of Ophthalmology 2005; 5: 1037-1042
AIM: To assess the prevalence of glaucoma in a rural population 50 years old or older in Shaanxi Province, China. METHODS: By using a stratified, cluster-based and random sampling technique, 8 500 people were selected randomly from the north, the south and the middle regions of Shaanxi Province in Western China from July to December in 2003. Among them, 2 125 people were 50 years or older. All participants had an interview with a standard questionnaire and the questions included the previous diagnosis of glaucoma, family history and outbreak history. Then a detailed and relative eye examination was performed, including logarithm of the minimum angle of resolution visual acuity, external eye examination, deepness of the anterior chamber and the fundus examination. The intraocular pressure (IOP) of these people aged 50 years old or more was measured with Perkins applanation tonometry. A further examination was performed to those persons with suspicious glaucoma, including repeated tonometric examination, gonioscopy, provocative test, automated visual field testing, etc. RESULTS: There were 1 775 of the eligible 2 125 people of 50 years old or more were interviewed and examined from July to December, 2003. The response rate was 83.53%. The prevalence of glaucoma was 2.14%, and primary angle-closure glaucoma, primary angle-open glaucoma and secondary glaucoma accounted for 1.63%, 0.39% and 0.11% respectively. The visual function in 55.26% of glaucoma patients was damaged in certain degree, of which blindness at least in one eye as a result of glaucoma accounted for 31.58%. Of the 38 participants with glaucoma, 27 (71.05%) people had not been previously diagnosed or treated. Of the other 11 (28.95%) participants previously diagnosed, only 6 (54.55%) had been received treatment. The mean and standard deviation of i IOP among the right and left normal eyes was 13.9mmHg. With correlation analysis, IOP increased significantly with age increase after controlling for gender and blood pressure in partial correlation (P < 0.05). CONCLUSION: The prevalence of glaucoma in the rural population in Shaanxi Province is 2.14%. The proportion of primary angle-closure glaucoma and primary angle-open glaucoma in primary glaucoma patients is 4.18: 1. In this population, a majority of glaucoma was undiagnosed and untreated previously. LA: Chinese
Dr. B.-C. Ren, Department of Ophthalmology, Second Hospital of Xi'an Jiaotong University, Xi'an 710004 Shaanxi Province, China
Classification:
1.6 Prevention and screening (Part of: 1 General aspects)
