PURPOSE: To determine the prevalence of full-thickness macular holes in the elderly Chinese population. DESIGN: Population-based,cross-sectional cohort study. METHODS: The Beijing Eye Study included 4439 subjects out ...PURPOSE: To determine the prevalence of full-thickness macular holes in the elderly Chinese population. DESIGN: Population-based,cross-sectional cohort study. METHODS: The Beijing Eye Study included 4439 subjects out of 5324 subjects invited to participate (response rate 83.4% ) aged 40 years or older. The present investigation consisted of 8653 (97.9% ) eyes of 4346 subjects for whom readable fundus photographs were available. RESULTS: Full-thickness macular holes were found in eight (0.092% ) eyes of seven (0.16% )-patients (six women). Prevalence was 0.09± 3.04% 95% confidence interval (CI): 0.03,0.16% . CONCLUSIONS: Fullthickness macular holes may be present in approximately 1.6 out of 1000 elderly Chinese in Northern China. Calculated for the entire population in China,the figure would be approximately 750,000 patients with unilateral full-thickness macular holes 650,000 (95% CI: 217,000 to 1,156,000) or bilateral full-thickness macular holes 100,000 (95% CI: 33,000 to 178,000).展开更多
PURPOSE: To estimate the prevalence and distribution of blindness and low vision in Northern China. DESIGN: Population-based cohort study. METHODS: The Beijing Eye Study included 4438 subjects with an age of 40+ years...PURPOSE: To estimate the prevalence and distribution of blindness and low vision in Northern China. DESIGN: Population-based cohort study. METHODS: The Beijing Eye Study included 4438 subjects with an age of 40+ years. Mean age was 56.2± 10.6 years (range,40 to 101 years). RESULTS: Fortythree (1.0% ) individuals had low vision (< 20/60 and ≥ 20/400 best-corrected vision),and 17 (0.4% ) individuals were blind (best-corrected visual acuity in the better-seeing eye < 20/400). Low vision/blindness were significantly associated with age (P < .001),myopic refractive error (P < .001),and level of educational background (P=.035). It was not associated with gender (P=.76) and rural vs urban area (P=.88). CONCLUSIONS: Blindness or low vision affects approximately one in 100 Chinese older than 40 years. An estimated 4.1 million Chinese older than 40 years have low vision,and an estimated 1.6 million Chinese older than 40 years are blind.展开更多
文摘PURPOSE: To determine the prevalence of full-thickness macular holes in the elderly Chinese population. DESIGN: Population-based,cross-sectional cohort study. METHODS: The Beijing Eye Study included 4439 subjects out of 5324 subjects invited to participate (response rate 83.4% ) aged 40 years or older. The present investigation consisted of 8653 (97.9% ) eyes of 4346 subjects for whom readable fundus photographs were available. RESULTS: Full-thickness macular holes were found in eight (0.092% ) eyes of seven (0.16% )-patients (six women). Prevalence was 0.09± 3.04% 95% confidence interval (CI): 0.03,0.16% . CONCLUSIONS: Fullthickness macular holes may be present in approximately 1.6 out of 1000 elderly Chinese in Northern China. Calculated for the entire population in China,the figure would be approximately 750,000 patients with unilateral full-thickness macular holes 650,000 (95% CI: 217,000 to 1,156,000) or bilateral full-thickness macular holes 100,000 (95% CI: 33,000 to 178,000).
文摘PURPOSE: To estimate the prevalence and distribution of blindness and low vision in Northern China. DESIGN: Population-based cohort study. METHODS: The Beijing Eye Study included 4438 subjects with an age of 40+ years. Mean age was 56.2± 10.6 years (range,40 to 101 years). RESULTS: Fortythree (1.0% ) individuals had low vision (< 20/60 and ≥ 20/400 best-corrected vision),and 17 (0.4% ) individuals were blind (best-corrected visual acuity in the better-seeing eye < 20/400). Low vision/blindness were significantly associated with age (P < .001),myopic refractive error (P < .001),and level of educational background (P=.035). It was not associated with gender (P=.76) and rural vs urban area (P=.88). CONCLUSIONS: Blindness or low vision affects approximately one in 100 Chinese older than 40 years. An estimated 4.1 million Chinese older than 40 years have low vision,and an estimated 1.6 million Chinese older than 40 years are blind.
