Clinical Outcomes of Advanced Surface Ablation with Smoothing in High Myopia.

Ahn, Ki Su; Lee, Seung Wuk; Lee, Gi Heon; Choi, Bong Joon

doi:2012.53.3.365

J Korean Ophthalmol Soc > Volume 53(3); 2012 > Article

Original Article

Journal of the Korean Ophthalmological Society 2012;53(3):365-371.
DOI: https://doi.org/10.3341/jkos.2012.53.3.365 Published online March 15, 2012.

Clinical Outcomes of Advanced Surface Ablation with Smoothing in High Myopia.

Ki Su Ahn, Seung Wuk Lee, Gi Heon Lee, Bong Joon Choi

¹Lee Eye Clinic, Busan, Korea. eyebong1@hanmail.net
²Department of Ophthalmology, Kosin University College of Medicine, Busan, Korea.

고도근시에서 스무딩을 병용한 고등각막표면연마굴절수술(Advanced Surface Ablation)의 임상성적

안기수¹⋅이승욱²⋅이기헌¹⋅최봉준¹

Lee Eye Clinic¹, Busan, Korea Department of Ophthalmology, Kosin University College of Medicine², Busan, Korea

Abstract

PURPOSE
To investigate the results of Advanced Surface Ablation (ASA) coupled with "smoothing" to smooth the ablation surface after covering masking fluid. METHODS: ASA was performed in 61 eyes with ablation depth of more than 75 microm. The mean refractive error was -5.88 +/- 1.27 D and mean ablation depth was 102.93 +/- 12.06 microm. Smoothing was performed in all patients (mean depth 16.79 +/- 2.43 microm, mean diameter 8.77 +/- 0.16 mm). Customized Aspheric Transition zone (CATz) was used in the laser algorithm. RESULTS: The mean refractive error was -0.29 +/- 0.41 D at postoperative 6 months and 97% of patients had an UCVA of 1.0 or better at postoperative 6 months. There was no statistically significant difference in magnitude of high-order aberrations at postoperative 6 months. The magnitude of total spherical aberrations increase was 0.084 microm at postoperative 6 months (p<0.05, paired t-test). The cornea was maintained clear in the majority of eyes. CONCLUSIONS: Excellent results were obtained by ASA coupled with "smoothing" in high myopia patients with an ablation depth greater than 75 microm.

Key Words: Advanced surface ablation (ASA);Customized Aspheric Transition zone (CATz);High myopia;Smoothing