펨토초라식과 에피라식의 단기 임상결과 비교
Comparison of Short Term Clinical Results Between Epi-LASIK and Femtosecond LASIK
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목적: 펨토초라식과 에피라식의 단기 임상결과를 비교하고자 하였다. 대상과 방법: 근시로 에피라식을 시행받은 20명 40안과 펨토초라식을 시행받은 20명 40안에 대하여 수술 후 시력 회복, 구면렌즈대응 치, 안전성, 효율성, 안정성, 예측성 및 고위수차를 비교하였다. 결과: 술 후 1주, 1개월 및 2개월째의 나안시력은 에피라식군은 0.51 ± 0.11, 0.95 ± 0.08, 0.97 ± 0.08였으며 펨토초라식군은 0.76 ± 0.19, 0.97 ± 0.07, 0.98 ± 0.06이었다. 술 후 1주, 1개월 및 2개월째의 구면렌즈 대응치는 에피라식군에서 -0.83 ± 0.24, -0.31 ± 0.19, -0.27 ± 0.09였고 펨토초라식군에서는 -0.47 ± 0.21, -0.28 ± 0.15, -0.25 ± 0.12로 술 후 1주째에는 유의한 차이를 보였으나 술 후 1개월 및 2개월째에는 유의한 차이가 없었다. 술 후 2개월째의 안정성, 효율성, 안전성, 및 예측성은 두 군간에 차이가 없었다. 총 고위 수차, 코마, 구면수차는 에피라식과 펨토초라식군 모두에서 유의하게 증가하였으나 두 군간의 차이는 없었다. 결론: 펨토초라식은 근시 교정에서 에피라식보다 빠른 시력회복을 보이면서도 동등한 근시교정효과를 보였다. 또한 안정성, 효율성, 안전성, 예측성 등 모든 항목에서 동등한 우수성을 보였다.
Abstract
Purpose: To compare short-term clinical results of femtosecond LASIK with those of epi-LASIK. Methods: Twenty subjects (40 eyes) underwent femtosecond LASIK and 20 subjects (40 eyes) underwent epi-LASIK for myopia with astigmatism. The results of each surgery were compared with regard to visual acuity, spherical equivalent, safety, efficacy, stability, predictability and high order aberration. Results: Postoperative uncorrected visual acuities were 0.51 ± 0.11, 0.95 ± 0.08, and 0.97 ± 0.08 for epi-LASIK and 0.76 ± 0.19, 0.97 ± 0.07, and 0.98 ± 0.06 for femtosecond LASIK at one week, one month, and two months after surgery, respectively. Femtosecond LASIK showed faster improvement in visual acuity. Postoperative spherical equivalents were -0.83 ± 0.24, -0.31 ± 0.19, and -0.27 ± 0.09 for epi-LASIK and -0.47 ± 0.21, -0.28 ± 0.15, and -0.25 ± 0.12 for femtosecond LASIK. Safety, efficacy, stability, and predictability showed no differences between the two groups. High order aberrations were increased significantly; however, no significant difference between the two groups was found. Conclusions: Both epi-LASIK and femtosecond LASIK are effective for surgical correction of myopia with fast visual rehabilitation. In addition, epi-LASIK and femtosecond LASIK showed good safeties, efficacies, predictabilities, and stabilities.
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