목적 및 방법: 콘택트렌즈 착용자를 대상으로 원주굴절이상 정도에 따라 등가구면 오차 발생도를 비교해 보기 위해, 자각적 굴절검사와 자동굴절력계를 이용한 타각적 굴절검사로 over-refraction을 수행하였다. 결과: 5종의 콘택트렌즈를 착용한 상태에서 자각적 및 타각적 굴절검사로 덧굴절검사를 실시한 결과, 일회용 소프트콘택트렌즈와 6개월용 소프트콘택트렌즈 그리고 실리콘하이드로젤 콘택트렌즈에서는 그룹 B(-0.25~-0.75D)에서 가장 큰 측정오차를 보였고, 미용칼라 콘택트렌즈는 그룹 D(up to -2.00D)에서 가장 큰 측정오차를 보였으며, RGP 콘택트렌즈는 그룹A(0D)에서 가장 큰 측정오차를 보였다. 그러나, 오차값은

Purpose & Methods: In order to compare the occurrence of spherical equivalent error between subjective refraction and objective refraction(using autorefractometer) according to cylindrical refractive error, over-refraction was performed from contact lens wearers. Results: The differences of measured values by objective refraction in contrast to subjective refraction on wearing 5 types contact lens, in cases of one-day soft contact lens, 6-month contact lens and silicon-hydrogel contact lens, there was the biggest error of spherical equivalent in group B(-0.25~-0.75D of cylindrical refractive error). In cosmetic color contact lens, there was the biggest error in group D(up to-2.00D). In RGP contact lens, there was the biggest error in group A(0.00D). But their differences were no more than 0.10D, it was not significant clinically. Conclusion: From these results, autorefractometer should be an useful objective refraction in actual affairs.

• 이동열(대구과학대학 안경광학과) | Dong-Yeol Lee