| CR F-023 |
| Comparison of the distribution of lenticule decentration following small-incision lenticule extraction by subjective patient fixation method or triple marking centration method |
| 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 lenticule decentration following small-incision lenticule extraction (SMILE) via subjective patient fixation method or triple marking centration method using the tangential topography difference map of the Keratron Scout (Optikon, Rome, Italy) and compare inductions of corneal higher-order aberrations (HOAs) between the two methods.
방법 : This study analyzed decentration values obtained from the Keratron Scout tangential topography difference map of 110 eyes (110 patients) undergoing subjective patient fixation method (n=55) or triple marking centration method (n=55) based SMILE. Root mean square values of total HOAs, 3rd-order coma aberration, and 4th-order spherical aberration, as well as individual coefficients for vertical and horizontal coma were measured preoperatively and at 3-month postoperatively.
결과 : There were significant differences in horizontal decentered displacement (P = .048), vertical decentered displacement (P = .002), and total decentered displacement (P = .001) between the two groups. Total HOAs, coma, vertical coma, and spherical aberration increased in subjective patient fixation method (all P < .001), whereas total HOAs (P = .002) and vertical coma (P = .005) increased in triple marking centration method. Induction of total HOAs (P = .026), coma (P = .032), and spherical aberration (P = .013) were significantly larger in subjective patient fixation method.
결론 : SMILE procedure with triple marking centration method can yield improved treatment centration, accompanied by smaller induction of total HOAs, coma, and spherical aberrations.
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