Comparison of Clinical Results between Custom Laser In Situ Keratomileusis and Photorefractive Keratectomy with the Tracking System.
- Author:
Won Yeol RYU
1
;
Dong Won LEE
;
Woo Chan PARK
Author Information
1. Department of Ophthalmology, College of Medicine, Dong-A University, Busan, Korea. wcpark@daunet.donga.ac.kr
- Publication Type:Original Article
- Keywords:
LADARVision;
Myopia;
Refractive surgery
- MeSH:
Astigmatism;
Keratomileusis, Laser In Situ*;
Lasers, Excimer;
Myopia;
Photorefractive Keratectomy*;
Refractive Surgical Procedures;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2005;46(10):1725-1732
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the safety, stability and effectiveness of the LADARVision active tracking narrow beam excimer laser system using laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) for the correction of spherical myopia and astigmatism. METHODS: We reviewed 233 eyes that underwent LASIK (Group A: -6D) and PRK (Group C) from August 2002 to March 2003. We investigated uncorrected visual acuity (UCVA), manifest refraction, spherical equivalent, cyclotorsion, and astigmatic change before undergoing refractive surgery. The evaluation was repeated at 1 week, 1 month, 3 months, and 6 months after surgery. RESULTS: AT one week following surgery, the mean UCVA was 1.39+/-0.30 in Group A, 1.25+/-0.34 in Group B, and 1.06+/-0.25 in Group C. At postoperative 6 months, the mean UCVA was 1.32+/-0.30, 1.09+/-0.16, and 1.32+/-0.24 in Groups A, B, and C, respectively. In all 215 eyes, cyclotorsion was 74.4%: counterclockwise, 48.4% (4.01+/-3.01); and clockwise, 26.0% (-4.42+/-3.18). The astigmatism correction rate was 79.16% in Groups A and B (LASIK groups), and 70.10% in Group C. CONCLUSIONS: The LADARVision 4000 laser yielded excellent results in myopia, with or without astigmatism and showed early refractive stability, good UCVA outcomes, and effective correction of astigmatism at 6 months postoperatively. Further studies are needed to compare custom LASIK and conventional LASIK using LADARVision.
