The effect of collagen cross-linking procedure on the material of intracorneal ring segments.

Abstract:

PURPOSE:To assess the potential impact of corneal crosslinking treatment (365 nm ultraviolet (UV)A irradiation with riboflavin) on the material properties of Intracorneal Rings Segments (ICRS). MATERIALS AND METHODS:Material properties were studied using FT-IR spectroscopy and UV-Vis spectroscopy. Rings were examined: (1) after installation of riboflavin solution, (2) after irradiation with UV-A light and (3) after instillation of riboflavin solution followed by instillation and coeval irradiation. The experiments followed the standard corneal cross-linking (CXL) protocol of corneal crosslinking treatment. RESULTS:After instillation of riboflavin solution, a permanent intense yellow staining of the samples was observed. UV-Vis spectroscopy confirmed that a certain amount of riboflavin solution was absorbed into the samples after CXL procedure. FT-IR spectroscopic analysis showed alterations in the spectra of ICRS mainly at the 2800-3200 cm(-1) spectral region [modification in band intensities of CH(2) (2925 cm(-1)) and CH(3) (2950 cm(-1))]. CONCLUSIONS:Our results suggest crosslinking reaction in ICRS material. This should be taken into consideration prior to any CXL treatment of post ICRS-implanted cornea.

journal_name

Curr Eye Res

journal_title

Current eye research

authors

Sideroudi H,Labiris G,Soto-Beobide A,Voyiatzis G,Chrissanthopoulos A,Kozobolis V

doi

10.3109/02713683.2014.941071

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

592-7

issue

6

eissn

0271-3683

issn

1460-2202

journal_volume

40

pub_type

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