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作者1976年调查了美国依阿华州人有孔性视网膜脱离。确定了4种视网膜脱离的年发病率(按每10万人口计算):非外伤性有晶体眼(6.1),外伤性有晶体眼(1.0),非外伤性无晶体眼(4.9)及外伤性无晶体眼(0.4)。总人口女性多于男性。外伤性视网膜脱离男性明显多于女性。资料和方法:作者与依阿华州及其附近城市能做视网膜脱离手术的24位医生联系,发给他们调查表,要求报告依阿华州居民在1976年间施行原发性有孔性视网膜脱离手术数、病人年龄、性别、是有晶体还是无晶体眼、眼别及有否与眼或眼眶有关的外伤史。依阿华州人口资料系根据
In 1976, the author investigated porcine retinal detachment in Iowa. Four annual rates of retinal detachment were determined (per 100,000 population): non-traumatic ametropic (6.1), traumatic ametropic (1.0), non-traumatic ametropic (4.9) and traumatic Aphakia (0.4). The total population of more women than men. Traumatic retinal detachment significantly more men than women. MATERIALS AND METHODS: The authors contacted 24 physicians who were able to do retinal detachment in Iowa and nearby cities and sent them a questionnaire asking for reports of Iowa residents’ primary peri-retinal detachment in 1976 The number of surgery, patient age, gender, whether there is a crystal or aphakia, eye and eye or eye related trauma history. According to Iowa Population Information Department