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Leonardo Ferlini, Roberto Albertazzi, Guillermo Rao, Jesus Merayo-Lloves, Jose Alfonso; Outcomes of intrastromal rings combination results for treatment of central ectasias. Invest. Ophthalmol. Vis. Sci. 2014;55(13):4231.
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© ARVO (1962-2015); The Authors (2016-present)
Outcome Analyisis of a combination of Intracorneal ring segment (ICRS) both Ferrara and Intacts, for correction of central keratoconus.
13 eyes of 8 patients with contact lens intolerance or progressive central keratoconus underwent ICRS surgery and were followed for at least 6 months. Tectonic outcome were evaluated as a reduction of the keratometric (K) values: K minimal (Kmin) and K maximal (Kmax)).Visual outcome were measured as improve in uncorrected distance visual acuity (UDVA), best corrected visual acuity (CDVA), and refractive error (myopia and astigmatism) reduction (decimal scale). Data were processed with R-programing language for descriptive and inference statistical analysis.
There was a reduction of keratometric values Kmax-pre 45,91 ± 3,50 to Kmax-post 43,41 ± 3,03). Regarding VA(Decimal Scale) Mean UDVA change in from 0,33± 0,19 to 0,66± 0,26. Mean DCVA change from 0,86 ± 0,20 to 0,94± 0,18. Myopic and astigmatism components were highly reduced after ICRS implantation. Myopia was reduced from -2,34± 2,31 to -1,13± 0,99. Astigmatism was reduced from -2,00± 1,39 to -0,56± 0,82. No intraoperative and postoperative complications occurred in these eyes.
The combination of Ferrara and Intacs ICRS implantation archive good tectonic and refractive outcome in the care of patients with keratoconus. Nomograms for ICRS implantation should be changed and customized in order to archive standart refractive outcome.
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