| Comparison of Clinical Results between Custom Laser In Situ Keratomileusis and Photorefractive Keratectomy with the Tracking System. |
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Won Yeol Ryu, Dong Won Lee, Woo Chan Park |
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Department of Ophthalmology, College of Medicine, Dong-A University, Busan, Korea. wcpark@daunet.donga.ac.kr |
| 추적장치를 이용한 맞춤 라식과 굴절교정 레이저 각막 절제술의 임상 결과 |
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류원열,이동원,박우찬 |
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Department of Ophthalmology, College of Medicine, Dong-A University, Busan, Korea |
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Correspondence:
Won-Yeol Ryu, M.D. |
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| 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. |
| Key Words:
LADARVision;Myopia;Refractive surgery |
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