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Comparison of corneal centering in photorefractive keratectomy

Authors
 Eung Kweon Kim  ;  Jae Woo Jang  ;  Jae Bum Lee  ;  Sung Bum Hong  ;  Young Ghee Lee  ;  Hong Bok Kim 
Citation
 YONSEI MEDICAL JOURNAL, Vol.39(4) : 317-322, 1998 
Journal Title
 YONSEI MEDICAL JOURNAL 
ISSN
 0513-5796 
Issue Date
1998
MeSH
Adult ; Female ; Humans ; Lasers, Excimer ; Male ; Photorefractive Keratectomy/methods*
Abstract
The present study compares three centering methods for excimer laser photorefractive keratectomy (PRK. VISX 20/20™) by analyzing the corneal topography. The subjects were grouped according to three different centering methods used in the procedure: an ablation using a light reflex from the patient's cornea pursued by both eyes of the surgeon (Group 1, n = 49); an ablation using a red light reflex from the patient's cornea pursued by the surgeon's left eye only while the right eye remained closed (Group 2, n = 27); an ablation using the patient's center of the pupil pursued by the surgeon's left eye only while the right eye remained closed (Group 3, n = 21). The mean distance from the center of ablation zone to the center of the pupil were; 0.69 ± 0.45 mm for Group 1, 1.05 ± 0.48 mm for Group 2 and 0.63 ± 0.28 mm for Group 3. The degree of deviation in Group 2 was significantly greater than in Group 1 or Group 3. The deviation was greater in the right eyes than the left eyes in Group 2 only. The decentration of the right eye in Group 2 was due to angle Kappa with misalignment of the fixation light and viewing tube containing reticule.
Files in This Item:
T199801516.pdf Download
DOI
10.3349/ymj.1998.39.4.317
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
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/176494
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