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EYEREUM OPHTHALMIC CLINIC
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[Award] 2019 KSCRS, EYEREUM EYE CLINIC Dr.David Sung Yong Kang
EYEREUM EYE CLINIC Dr. David Sung Yong Kang was awarded an academic award from KSCRS.
This award is selected by KSCRS on the basis of the evaluation of the academic value of the paper.
한국백내장굴절수술학회
KSCRS 2019 정기학술대회
Related study>> comparison of the Distribution of Lenticule Decentration Following SMILE by Subjective Patient Fixation or Triple Marking Centration
J Refract Surg. 2018 Jul 1;34(7):446-452. doi:
10.3928/1081597X-20180517-02
Healio Journal of Refractive Surgery David Sung Yong Kang, MD; Hun Lee, MD; Dan Z. Reinstein, MD, MA(Cantab), FRCSC; Cynthia J. Roberts, PhD; Samuel Arba-Mosquera, PhD; Timothy J. Archer, PhD; Eung Kweon Kim, MD, PhD; Kyoung Yul Seo, MD, PhD; Tae-im Kim, MD, PhD PURPOSE: To investigate lenticule decentration following small incision lenticule extraction (SMILE) via the subjective patient fixation method or triple marking centration method and compare inductions of corneal higher-order aberrations (HOAs) between the two methods. METHODS: This study analyzed decentration values obtained from the Keratron Scout (Optikon, Rome, Italy) tangential topography difference map of 110 eyes (110 patients) undergoing SMILE with the subjective patient fixation method (n = 55) or triple marking centration method (n = 55). 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 3 months postoperatively. Relationships between the magnitudes of decentration and induced corneal HOAs were assessed. RESULTS: 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 significantly increased in the subjective patient fixation method (all P < .001), whereas total HOAs (P = .002) and vertical coma (P = .005) increased in the triple marking centration method. Induction of total HOAs (mean values: 0.13 vs 0.07; P = .026), coma (0.09 Accurate centration of the treatment zone during corneal refractive procedures plays an important role in achieving good visual outcomes. 1-3 Visual axis, pupil center, and corneal vertex have been the suggested treatment centers for refractive procedures. The corneal intercept of the visual axis would be the most ideal reference, but it is difficult to center the crossing point. Corneal vertex centration has been reported to be better than entrance pupil centration regarding the induced ocular aberrations and asphericity. 4-6 Moreover, it is well known that the pupil center shifts with changes in pupil size. 7 Small incision lenticule extraction (SMILE) using only a femtosecond laser is a new technique for the correction of myopia and myopic astigmatism. 8 This procedure extracts the From Eyereum Eye Clinic, Seoul, South Korea (DSYK); the Department of Ophthalmology, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, South Korea (HL); The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea (HL, EKK, KYS, TK); London Vision Clinic, London, United Kingdom (DZR, TJA); the Department of Ophthalmology, Columbia University Medical Center, New York (DZR); Centre Hospitalier National d'Ophtalmologie, Paris, France (DZR); the Department of Ophthalmology & Visual Science and Department of Biomedical Engineering, The Ohio State University, Ohio (CJR); Schwind eye-tech-solutions, Kleinostheim, Germany (SA-M); and Corneal Dystrophy Research Institute, Severance Biomechanical Science Institute, Yonsei University College of Medicine, Seoul, South Korea (EKK). Supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and
ORIGINAL ARTICLE
Comparison of the Distribution of Lenticule Decentration Following SMILE by Subjective Patient Fixation or Triple Marking Centration
ABSTRACT
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