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要約 目的:海外の医療協力活動で使用された眼内レンズ(IOL)の度数の報告。対象と方法:インド北西部での2回のアイキャンプで白内障手術を施行された138例138眼を対象とした。IOLの度数はA定数を118.5としたSRKⅡ式で決定した。結果:IOL度数の平均値は,インド人111眼では22.37±2.19D,チベット人27眼では22.41±1.27Dで,両群間に有意差はなかった。両群の51.4%が21.0~23.0D,87.7%が19.0~25.0Dの範囲にあった。結論:アイキャンプでは,19.0~25.0Dの範囲で22.0Dを中心にした正規分布をするIOLを用意すれば,約90%の患者に対応できる。
Abstract. Purpose:To report the power of intraocular lens(IOL)used for cataract surgery in an eye camp in northwestern India. Cases and Method:This study was made on 138 eyes of 138 patients who received cataract surgery in an eye camp in northwestern India in 2 years through 2009. Power of IOL was determined by SRKⅡ formula with 118.5 as constant A. Results:Power of IOL averaged 22.37±2.19 diopters in 111 eyes of Indians. It averaged 22.4±1.27 diopters in 27 eyes of Tibetans. There was no significant difference between the two groups. Power of IOL ranged from 21.0 to 23.0 diopters in 51.4% and from 19.0 to 25.0 diopters in 87.7% in the whole series. Conclusion:Approximately 90% of prospective patients will have favorable visual outcome by providing IOLs ranging from 19.0 to 25.0 diopters in power.
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