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ORIGINAL ARTICLE
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Results of laser enhancement for residual myopia after primary laser in situ keratomileusis


1 Eye Department, Faculty of Medicine and Health Sciences, Sana'a University; Refractive Surgery Unit, Magrabi Eye Hospital, Sana'a, Yemen
2 Refractive Surgery Unit, Magrabi Eye Hospital, Sana'a, Yemen

Correspondence Address:
Mahfouth A Bamashmus,
Eye Department, Faculty of Medicine and Health Sciences, Sana'a University, Sana'a; Refractive Surgery Unit, Magrabi Eye Hospital, Sana'a
Yemen
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/tjo.tjo_32_19

PURPOSE: The purpose of the study is to evaluate and analyze the results and outcomes after laser enhancement for residual myopia after primary laser in situ keratomileusis (LASIK). PATIENTS AND METHODS: This retrospective interventional consecutive case series clinical study was performed on 112 consecutive eyes (82 patients) that had undergone primary LASIK before the enhancement procedure. The study was done in the Refractive Surgery Unit in Yemen Magrabi Hospital between 2006 and 2014. The retreatment was for residual myopia with or without astigmatism. Either the original flap was lifted or surface ablation was performed. Parameters evaluated were uncorrected visual acuity (UCVA) and best spectacle-corrected visual acuity (VA), spherical equivalent (SE) refraction, corneal topography, and pachymetry. Complications after laser enhancement were also evaluated. RESULTS: Mean age of the study group was 26.72 ± 6.89 years (range from 18 to 44 years). Males accounted for 37/82 (45.1%) and females for 45/82 (54.9%). The right eye was treated in 67/112 (59.8%) and the left eye in 45/112 (40.2%). Before primary LASIK, the mean SE (MSE) was −5.78 ± 1.89 D. Before enhancement, the MSE was −1.32 ± 0.61 D (range −3.25 D to −0.50 D), and none of the eyes had an UCVA of 20/40 or better. Twelve months after retreatment, the percentage of eyes having UCVA of 20/40 or better increased to 67.9% (76 of 112). There were no vision-threatening complications seen. CONCLUSION: Retreatment or enhancement after LASIK surgery by lifting the original flap or surface ablation is a safe and effective method for the treatment of regressed or undercorrected myopia. The risk of postoperative complications is very minimal.


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    -  Bamashmus MA
    -  Al-Akhlee HA
    -  Al-Azani YA
    -  Al-Kershy NA
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