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Comparison of higher-order aberrations after wavefront-guided laser in situ keratomileusis and laser-assisted subepithelial keratectomy

Authors
 So-Hyang Chung  ;  In Sik Lee  ;  Young Ghee Lee  ;  Hyung Keun Lee  ;  Eung Kweon Kim  ;  Geunyoung Yoon  ;  Kyoung Yul Seo 
Citation
 JOURNAL OF CATARACT AND REFRACTIVE SURGERY, Vol.32(5) : 779-784, 2006 
Journal Title
 JOURNAL OF CATARACT AND REFRACTIVE SURGERY 
ISSN
 0886-3350 
Issue Date
2006
MeSH
Cornea/physiopathology* ; Diagnostic Techniques, Ophthalmological ; Follow-Up Studies ; Humans ; Keratectomy, Subepithelial, Laser-Assisted/methods* ; Keratomileusis, Laser In Situ/methods* ; Myopia/physiopathology ; Myopia/surgery* ; Prospective Studies ; Refraction, Ocular/physiology ; Visual Acuity/physiology
Abstract
PURPOSE: To compare the higher-order aberrations (HOAs) in 70 eyes (38 patients) that had wavefront-guided laser in situ keratomileusis (LASIK) with those in 70 eyes (40 patients) that had wavefront-guided laser-assisted subepithelial keratectomy (LASEK) for the treatment of myopia. SETTING: Department of Ophthalmology, Yonsei University College of Medicine, Myongdong Bal-geun sesang Eye Clinic, and Seran Eye Center, Seoul, Korea. METHODS: In a prospective study, 140 consecutive eyes of 78 patients were treated with wavefront-guided LASIK or LASEK according to the patient's choice after each procedure had been thoroughly explained. The patients were followed for 6 months. Best corrected visual acuity (BCVA), uncorrected visual acuity (UCVA), manifest refraction, and wavefront aberrations were measured at baseline and 1, 3, and 6 months after surgery. RESULTS: There were no significant differences in postoperative BCVA, UCVA, and manifest refraction between groups. The mean root-mean-square wavefront error of HOAs for a scotopic pupil in the wavefront-guided LASIK group was significantly smaller than that in the wavefront-guided LASEK group at 1 month. Analyzing individual Zernike coefficients, the spherical aberration and second coma were significantly smaller in the wavefront-guided LASIK group than in the wavefront-guided LASEK group at 1 month. This difference in HOAs between groups disappeared at 3 and 6 months. CONCLUSIONS: The HOAs in the scotopic condition were not different between the wavefront-guided LASIK and LASEK groups beginning 3 months after surgery. However, the HOAs in the LASIK and LASEK groups had a different time course, especially in the case of spherical aberration. This finding suggests that postoperative changes in aberration contribute to the final outcome of wavefront-guided ablation.
Full Text
http://www.sciencedirect.com/science/article/pii/S0886335006001507
DOI
10.1016/j.jcrs.2005.10.033
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
Seo, Kyuong Yul(서경률) ORCID logo https://orcid.org/0000-0002-9855-1980
Lee, Hyung Keun(이형근) ORCID logo https://orcid.org/0000-0002-1123-2136
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/108870
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