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目的:正常眼での調節微動高周波成分の出現頻度(HFC値)に対する屈折異常と眼優位性の関係の評価。対象と方法:屈折異常以外の眼科的疾患または眼疲労がない学生49名91眼を対象とした。調節微動の計測には自動屈折計(Speedy-K(R))と解析プログラムMF-1(ライト製作所)を使い,優位眼の決定には眼優位性定量装置(北里大)を使った。結果:低調節刺激によるHFC値は,近視の度数と正の相関があった(p<0.05)。眼優位性が強い被検者では,優位眼のHFC値が非優位眼よりも有意に高かった(p<0.05)。結論:HFC値は屈折異常の程度と眼優位性とに関連する。この事実は具体例での評価の際に考慮される必要がある。
Purpose:To evaluate the influence of refractive error and ocular dominance on high-frequency component of microfluctuation(HFC). Cases and Method:This study was made on 91 eyes of 49 students. They had no ocular diseases except refractive error. HFC was measured using an autorefractor(Speedy-K(R))and was analyzed by a soft program(MF-1,Rigfton). Results:HFC elicited by weak accommodative stimulus was positively correlated with the power of myopia(p<0.05). In test persons with manifest ocular dominancy,HFC in the dominant eye was significantly greater than in nondominant one. Conclusion:HFC is significantly correlated with refractive error and ocular dominancy. This feature needs due attention in actual studies.
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