cross-linking of corneal collagen with uva and riboflavin for the treatment of corneal disease

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فرهاد حافظی

farhad hafezi

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Cross-Linking of Corneal Collagen with UVA and Riboflavin for the Treatment of Corneal Disease

Introduction In recent years, reduced corneal biomechanics have been identified as an important element in the pathogenesis of various corneal diseases. The biomechanical characteristics of a connective tissue such as strength and resistance against mechanical stress are indispensable prerequisites to maintain regular shape and function of that tissue. Intraand intermolecular cross-links betwee...

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UVA-light and riboflavin-mediated corneal collagen cross-linking.

Keratoconus and other corneal conditions associated with progressive stromal thinning including keratectasia after laser-assisted in situ keratomileusis (LASIK) and pellucid marginal degeneration represent therapeutic challenges. Until recently, available therapies including contact lenses, epikeratoplasty, intrastromal corneal rings, and corneal transplantation targeted, in principle, the abno...

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Keratocyte apoptosis after corneal collagen cross-linking using riboflavin/UVA treatment.

PURPOSE Combined riboflavin/UVA treatment inducing collagen cross-links in the cornea has been shown to increase the biomechanical rigidity of the cornea and has been used successfully in the treatment of progressive keratoconus. The current study was undertaken to investigate the possible cytotoxic effect of combined riboflavin/UVA treatment on corneal keratocytes in vivo. METHODS Thirty-fou...

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Riboflavin/UVA Collagen Cross-Linking-Induced Changes in Normal and Keratoconus Corneal Stroma

PURPOSE To determine the effect of Ultraviolet-A collagen cross-linking with hypo-osmolar and iso-osmolar riboflavin solutions on stromal collagen ultrastructure in normal and keratoconus ex vivo human corneas. METHODS Using small-angle X-ray scattering, measurements of collagen D-periodicity, fibril diameter and interfibrillar spacing were made at 1 mm intervals across six normal post-mortem...

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UVA/Riboflavin Cross-Linking as an Alternative Treatment for Therapeutic Keratoplasty in Corneal Melting

Purpose: To demonstrate the effectiveness of UVA/riboflavin cross-linking (CXL) in the treatment of therapy resistant corneal melting of different etiology. Methods: This paper describes a series of four cases presenting severe ulcerative keratitis with infectious and noninfectious causes. In spite of intensive medical treatment, corneal melting did develop in all four eyes. CXL was performed t...

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Contralateral eye study of corneal collagen cross-linking with riboflavin and UVA irradiation in patients with keratoconus.

PURPOSE To assess the progression of keratoconus in patients treated with collagen cross-linking with riboflavin and ultraviolet A (UVA) irradiation. METHODS Thirty-eight eyes of 19 patients with progressive keratoconus were enrolled in a prospective comparative study. Average follow-up was 9 +/- 2 months (range: 5 to 12 months). The worse eye was treated with collagen cross-linking, and the ...

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عنوان ژورنال:
journal of current ophthalmology

جلد ۲۱، شماره ۲، صفحات ۳-۱۲

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