Internationally, incidence rates of rhegmatogenous RD differ only slightly. These differences may be due to the age of the population surveyed and whether pseudophakic/aphakic patients were included in the study, rather than to a genetic predisposition. In the US, there are approximately 28,000 cases of rhegmatogenous RD each year. The mean annual age- and sex-adjusted incidence in one study was 17.9/100,000 population in Olmsted County, and in another study 12.9/100,000 population in Rochester, Minnesota. The higher rate in Olmsted County may be attributable to the greater number of cataract procedures. A rate of 8.0/100,000 population has been reported in China; 6.9/100,000 population in Finland; 10.4/100,000 population in Sweden; and 10.4/100,000 population in Japan. The incidence of rhegmatogenous RD increases with age. For patients 60 years and older, the rate increased to 21.8 /100,000 population in Finland and to 28.0 /100,000 population in Sweden. There have been conflicting reports about prevalence in men and women, although one study found men to be more affected than women.
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