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ORIGINAL ARTICLE
Year : 2017  |  Volume : 22  |  Issue : 1  |  Page : 82

Photorefractive keratectomy in the management of postradial keratotomy hyperopia and astigmatism


1 Research and Development Department, Persian Eye Clinic, Isfahan, Iran
2 Isfahan Eye Research Center, Feiz Eye Hospital; Department of Ophthalmology, Feiz Eye Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
3 Isfahan Medical Students Research Center; Student of Medicine, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
4 Isfahan Eye Research Center, Feiz Eye Hospital; Department of Ophthalmology, Feiz Eye Hospital; Isfahan Medical Students Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

Correspondence Address:
Mohammad-Ali Abtahi
Feiz Hospital, Qods Square, Isfahan
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jrms.JRMS_478_15

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Background: The aim of this study is to evaluate the results of photorefractive keratectomy (PRK) in the management of postoperative hyperopia and astigmatism in patients with history of radial keratotomy (RK). Materials and Methods: This prospective nonrandomized noncomparative interventional case series enrolled consecutive eyes treated with PRK after RK. In cases, in which (1) wavefront (WF) scan was undetectable during primary examinations; and/or, (2) WF data were not transferable to the excimer laser device, patients were treated with the tissue-saving (TS) mode. Patients with detectable/transferable WF were assigned to WF-guided advanced personalized treatment (APT). Results: Thirty-two and 47 eyes were managed by APT and TS modes, respectively. Pooled analysis of both APT and TS groups showed improvement in uncorrected distant visual acuity and corrected distant visual acuity. The amount of sphere, cylinder, corneal cylinder, spherical equivalent, defocus equivalent, and total aberration showed improvement as well. Conclusion: PRK seems to bring favorable outcome and safety profile in the management of post-RK hyperopia and astigmatism. It is crucial for practitioners to warn their patients about the fact that they may still have progressive refractive instability regardless of their choice on the laser method of vision correction.


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