목적 : 근시안에서 구면 콘택트렌즈에 의한 굴절교정 후 동공크기, 동공중심이동 및 동공중심 offset과 고위 수차 상관성을 분석하고자 하였다.
방법 : 각막굴절교정수술의 경험이 없고 안질환이 없는 건강한 성인 33명(평균 연령: 23.0±2.9세, 평균 등가 구면굴절력: -3.28±1.67 D)을 대상으로 하였다. 구면 콘택트렌즈 착용 전과 후 동공크기, 동공중심이동, 동공중심 offset 및 고위수차는 Wavefront Analyzer를 사용하여 기기에서 조정되는 암소시(scotopic, 0.006 lx) 상태에서 3회씩 측정하고 평균값을 사용하였다. 통계분석은 SPSS(Ver. 20.0)을 사용하였다.
결과 : 콘택트렌즈에 의한 굴절교정 후 동공크기는 6.72±0.65 mm로 나안상태보다 감소하였고(p<0.001), 동 공중심 이동량은 0.17±0.13 mm로 동공중심 offset은 0.36±0.18 mm로 나안상태보다 증가하였으며(p=0.005), 동공중심 offset 방향은 상이측, 하이측, 상비측, 하비측으로 이탈된 경우는 각각 46%, 36%, 9%, 9%로 나안상태와 차이가 없었다. 콘택트렌즈 착용 후 전체 고위수차와 구면수차는 유의하게 감소하였고(p=0.036, p<0.001), 코 마수차는 차이가 없었다. 구면수차는 동공크기와 상관성이 있었고(r=0.398, p=0.001), 코마수차는 동공중심 offset 과 상관성이 있었다(r=0.340, p=0.005).
결론 : 구면 단초점 콘택트렌즈 착용 후 동공중심 offset이 증가하였지만 고위수차와 구면수차는 감소하였고 코 마수차는 변함이 없어, 콘택트렌즈 착용으로 나타난 동공중심 offset이 시력의 질에 영향을 주지 않을 것으로 판단된다.

Purpose : To investigate the correlation between pupil size, pupil center shift, pupil center offset and high-order aberration (HOA) after refractive correction with contact lenses in myopes.
Methods : Thirty-three healthy adults (mean age: 23.0±2.9 years, mean equivalent spherical power: -3.28±1.67 D, 66 eyes) with no history of ocular surgery, and systemic disease were enrolled. The pupil sizes, pupil center shift, pupil center offset and HOA were measured three times under a scotopic (0.006 lx) condition adjusted by the instrument using a Wavefront Analyzer and the mean value was used. Statistical analysis was performed using SPSS (Ver. 20.0).
Results : After refractive correction with contact lenses, the pupil sizes were significantly decreased to 6.72±0.65 mm (p<0.001), pupil center shift was 0.17±0.13 mm and pupil center offset was increased to 0.36±0.18 mm (p=0.005). After refractive correction with contact lenses, the directions of pupil center offset were not different compared to naked eye and superotemporally, inferotemporally, superonasally, inferonasally offset from pupil center were 46%, 36%, 9% and 9% respectively. Total HOAs and spherical aberration (SA) were significantly decreased (p=0.036, p<0.001) after wearing contact lens, and coma aberration (CA) was not significantly different. SA was correlated with pupil size (r=0.398), CA was correlated with pupil center offset (r=0.340).
Conclusion : The pupil offset was increased after refractive correction with soft spherical contact lenses, however total HOAs and SA were decreased and CA did not change that the pupil center offset induced by contact lens wearing would not affect the visual quality.

Abstract
 Ⅰ. 서 론
 Ⅱ. 대상 및 방법
  1. 연구 대상
  2. 연구 방법
 Ⅲ. 결 과
  1. 굴절교정 전과 후 동공크기
  2. 굴절교정 전과 후 동공중심 이동(shift)
  3. 굴절교정 전과 후 동공중심 offset
  4. 굴절교정 전과 후 고위수차의 변화
  5. 동공크기와 안구 고위수차의 관계
  6. 동공중심 이동량과 안구 고위수차의 관계
  7. 동공중심 offset과 안구 고위수차의 관계
 Ⅳ. 고 찰
 Ⅴ. 결 론
 References
 요 약

• Hyeok-Kwon(Master of Science in Clinical Optometry, Ketchum University (SSCO)/Dept. of Optometry, Graduate School of Public Health, Eulji University) | 권혁
• Dong-Kyu Lim(Chaeum Optical Shop) | 임동규
• Koon-Ja Lee(Dept. of Optometry, Eulji University) | 이군자