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Journal of Ophthalmology
Volume 2014, Article ID 204191, 4 pages
http://dx.doi.org/10.1155/2014/204191
Clinical Study

Risk Factors in Post-LASIK Corneal Ectasia

1Department of Ophthalmology, Medicine Faculty, Fatih University, Eski Londra Asfaltı, Hürriyet Mah. Dumlupınar Sokak No. 10, Şirinevler-Bahçelievler, 34192 İstanbul, Turkey
2Department of Ophthalmology, Medicine Faculty, Fatih University, Yalı Mah. Sahil Yolu Sokak No. 16, Maltepe, 34844 İstanbul, Turkey
3Department of Ophthalmology, Medicine Faculty, Fatih University, Atatürk M. Sütçü İmam Caddesi No. 14, Ümraniye, 34764 İstanbul, Turkey

Received 16 April 2014; Accepted 20 May 2014; Published 3 June 2014

Academic Editor: Vasilios F. Diakonis

Copyright © 2014 Mehmet Gurkan Tatar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. To evaluate the risk factors for post-laser in situ keratomileusis (LASIK) ectasia. Materials and Methods. Medical records of 42 eyes of 28 (10 women, 18 men) patients who developed corneal ectasia after LASIK were retrospectively reviewed. Topographical features and surgical parameters of those patients were evaluated. Results. The mean age of patients was (23–48) years and the mean interval from LASIK to the diagnosis of post-LASIK ectasia was (12–60) months. The following factors were determined as a risk factors: deep ablation (>75 μm) in 10 eyes, FFK (forme fruste keratoconus) in 6 eyes, steep cornea (>47 D) in 3 eyes, pellucid marginal degeneration (PMD) in 2 eyes, thin cornea (<500 μm) in 2 eyes, thin and steep cornea in 2 eyes, thin cornea and deep ablation in 5 eyes, FFK and steep cornea in 2 eyes, and FFK, steep cornea, and deep ablation in 1 eye. However no risk factor has been determined in 9 eyes (21.4%). Conclusion. The findings of our study showed that most of the patients who developed post-LASIK ectasia have a risk factor for post-LASIK ectasia. However, the most common risk factor was deep ablation.