Evaluation of intrastromal corneal ring segments for treatment of post-LASIK ectasia patients with a mechanical implantation technique

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dc.authorid0000-0002-2918-1816en_US
dc.contributor.authorTunc, Zeki
dc.contributor.authorHelvacioglu, Firat
dc.contributor.authorSencan, Sadik
dc.date.accessioned2024-07-12T21:47:33Z
dc.date.available2024-07-12T21:47:33Z
dc.date.issued2011en_US
dc.departmentMaltepe Üniversitesien_US
dc.description.abstractAim: To evaluate the clinical outcomes of Keraring segment implantation in patients with post-laser-assisted in situ keratomileusis (LASIK) ectasia, using a mechanical implantation technique. Materials and Methods: Twelve eyes of 10 patients with post-LASIK ectasia were enrolled. Intracorneal ring segments (ICRS) were implanted aft er dissection of the tunnel using Tunc's specially designed dissector under suction. A complete ophthalmic examination was performed, including uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), spherical equivalent, keratometric (K) readings, inferosuperior asymmetry index (ISAI), and ultrasound pachymetry. All 3, 6, and 12-month follow-ups were completed, and statistical analysis was performed. Results: The mean preoperative UDVA for all eyes was 1.28 +/- 0.59 logMAR. At 12 months, the mean UDVA was 0.36 +/- 0.19 logarithm of the Minimum Angle of Resolution (logMAR) (P=0.002), and the mean preoperative CDVA was 0.58 +/- 0.3 logMAR, which improved to 0.15 +/- 0.12 (P=0.002) at 1 year. There was a significant reduction in cylindrical refractive and spherical equivalent refractive error from -5.29 +/- 2.47 diopters (D) and -5.54 +/- 5.04 D preoperatively to -1.47 +/- 0.71 D and -0.74 +/- 1.07 D (P=0.001, P=0.002), respectively, at 1 year. In the same period, the mean K-readings improved from 47.93 +/- 4.84 D to 40.87 +/- 2.36 D (P=0.002), and the mean ISAI improved from 5.34 +/- 3.05 to 2.37 +/- 1.68 (P=0.003). No significant changes in mean central corneal thickness were observed postoperatively. There were no major complications during or aft er surgery. Conclusion: ICRS implantation using a unique mechanical dissection technique is a safe and effective treatment for post-LASIK ectasia. All parameters showed improvement at 1-year follow-up.en_US
dc.identifier.doi10.4103/0301-4738.86310
dc.identifier.endpage442en_US
dc.identifier.issn0301-4738
dc.identifier.issn1998-3689
dc.identifier.issue6en_US
dc.identifier.pmid22011487en_US
dc.identifier.scopus2-s2.0-80155199672en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage436en_US
dc.identifier.urihttps://dx.doi.org/10.4103/0301-4738.86310
dc.identifier.urihttps://hdl.handle.net/20.500.12415/8052
dc.identifier.volume59en_US
dc.identifier.wosWOS:000296230600006en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherWOLTERS KLUWER MEDKNOW PUBLICATIONSen_US
dc.relation.ispartofINDIAN JOURNAL OF OPHTHALMOLOGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmzKY01234
dc.subjectIntrastromal corneal ring segmentsen_US
dc.subjectkeraringen_US
dc.subjectpost-LASIK ectasiaen_US
dc.titleEvaluation of intrastromal corneal ring segments for treatment of post-LASIK ectasia patients with a mechanical implantation techniqueen_US
dc.typeArticle
dspace.entity.typePublication

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