| CR F-024 |
| Comparing corneal higher-order aberrations in corneal wavefront-guided transepithelial photorefractive keratectomy versus small-incision lenticule extraction |
| 1Department of Ophthalmology, International St. Mary's Hospital, Catholic Kwandong University College of Medicine
2The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, 3Eyereum Eye Clinic
4Corneal Dystrophy Research Institute, Severance Biomedical Science Institute, Yonsei University College of Medicine |
| Hun Lee1,2, David Sung Yong Kang3, Byoung Jin Ha3, Jin Young Choi3, Hyung Keun Lee2, Kyoung Yul Seo2, Eung Kweon Kim2,4, Tae-im Kim2 |
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목적 : To investigate the changes in corneal higher-order aberrations (HOAs) before and after corneal wavefront-guided (CWFG) transepithelial photorefractive keratectomy (PRK) and small-incision lenticule extraction (SMILE).
방법 : Medical records of 158 eyes (158 patients) undergoing CWFG transepithelial PRK (n=77) or SMILE (n=81) were examined. Root mean square total HOAs, 3rd-order coma aberration, and 4th-order spherical aberration were measured preoperatively and 6-month postoperatively. Independent t-tests and analysis of covariance (ANCOVA) were used to compare changes in corneal HOAs between transepithelial PRK and SMILE.
결과 : Total HOAs and spherical aberration increased after PRK (all P < 0.001), whereas coma was stable after PRK. Total HOAs, spherical aberration, and coma were increased after SMILE (P < 0.001 for total HOAs, spherical aberration; P = 0.004 for coma). At 6-month postoperatively, total HOAs and spherical aberration were significantly larger in PRK than SMILE. On the other hand, coma was larger in SMILE than PRK. Induction of spherical aberration in SMILE was significantly smaller than that in PRK (P < 0.001), and induction of coma in SMILE was larger than that in PRK (P = 0.011).
결론 : SMILE demonstrated induction of total corneal HOAs comparable with CWFG transepithelial PRK, accompanied by smaller induction of corneal spherical aberration and larger induction of corneal coma aberration. During SMILE, surgeons should aim to obtain optimal centration for smaller induction of corneal HOAs.
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