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Anterior and posterior corneal changes after intracorneal ring segment implantation in eyes with keratoconus

Poster Details

First Author: O.Muftuoglu TURKEY

Co Author(s):    R. Aydin   E. Altinkurt   M. Ozsutcu        

Abstract Details


To evaluate the relationship between anterior and posterior corneal changes after intracorneal ring segment (ICRS) implantation in eyes with keratoconus.


Medipol University Medical School


102 eyes of 68 patients with keratoconus that underwent ICRS implantation using FS laser were included. All eyes were evaluated before and at least 6-months after surgery using Placido-Scheimpflug tomographer and anterior segment optical coherence tomography. The anterior sagittal, tangential, the posterior sagittal tangential, the anterior, posterior, and total corneal aberrations were evaluated before and after surgery.


The mean K decreased from 47.2±2.6 D to 43.9±1.8 D, and the mean posterior K increased from -7.5±1.6 D to -6.3±1.9 D (p<0.05). The mean anterior OPD (from 1.88±0.15 to 1.39±0.12), astigmatism (from 1.59±0.13 to 1.06±0.11), and coma (from 0.64±0.16 to 0.40±0.12) significantly decreased (p<0.05) whereas posterior OPD, higher order aberrations (from 0.53±0.18 to 0.66±0.21), coma (from 1.18±0.12 to 0.42±0.18), and spherical aberrations increased (from 0.07±0.11 to 0.14±0.12) after ICRS implantation (p<0.05).


Although anterior corneal aberrations decrease posterior corneal aberrations increase that may lead to antero-posterior compensation changes after ICRS implantation. FINANCIAL DISCLOUSRE: NONE

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