구면/비구면 레스토렌즈와 크리스타렌즈를 삽입한 후의 시력, 구면수차, 대비감도의 비교
Comparisons of Visual Acuity, Spherical Aberration and Contrast Sensitivity among Spheric, Aspheric ReSTOR^®, and Crystalens HD^® Lenses
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목적: 구면/비구면 레스토렌즈 혹은 크리스타렌즈를 삽입 받은 환자들의 술 후 시력, 구면수차 및 대비감도를 비교하고자 하였다. 대상과 방법: 양안 백내장 수술을 시행 받고 구면 레스토렌즈(4명), 비구면 레스토렌즈(7명), 혹은 크리스타렌즈(5명)를 삽입한 환자16명 32안에서 술 후 3개월째 시력, 구면수차 및 대비감도를 측정하였다. 결과: 술 후 3개월째, 원거리 및 중간거리시력은 세 군 간의 차이가 없었으나, 근거리시력은 구면/비구면 레스토렌즈에서 크리스타렌즈보다 통계적으로 우수하였다. 비구면 레스토렌즈가 구면 레스토렌즈 및 크리스타렌즈보다 낮은 구면수차를 보였고, 박명시 대비감도는 크리스타렌즈가 구면/비구면 레스토렌즈보다 3 주파수에서 통계적으로 유의하게 높았다. 결론: 크리스타렌즈를 삽입 받은 경우 구면/비구면 레스토렌즈를 삽입 받은 경우에 비해 근거리시력은 통계적으로 유의하게 낮았으나,박명시 대비감도는 통계적으로 유의하게 높았다.
Abstract
Purpose: To assess visual acuity, spherical aberration and contrast sensitivity in patients who were implanted with spheric,aspheric ReSTOR^® or Crystalens HD^® lenses. Methods: The present study enrolled 16 patients (32 eyes) implanted with biliateral spheric ReSTOR^® (four patients,spheric ReSTOR group), bilateral aspheric ReSTOR^® (seven patients, aspheric ReSTOR group) or bilateral Crystalens HD^® (five patients, Crystalens HD group) lenses. At three months postoperatively, visual acuity, spherical aberration, and contrast sensitivity were evaluated. Results: Three months after surgery, there were no significant differences in uncorrected distant or intermediate visual acuity among the three groups. Uncorrected near visual acuity in the spheric and aspheric ReSTOR groups was superior to that in the Crystalens HD group, and the aspheric ReSTOR group had less spherical aberration. Mesopic contrast sensitivity in the Crystalens HD group was significantly higher at three cycles per degree compared to those in the spheric and aspheric ReSTOR groups. Conclusions: Uncorrected near visual acuity in the Crystalens HD group was inferior to those in the spheric and aspheric ReSTOR groups, but the mesopic contrast sensitivity of the Crystalens HD group at three cycles per degree was superior to those in the spheric and aspheric ReSTOR groups.
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