Corneal collagen cross-linking: ectasia and beyond.

Abstract:

PURPOSE OF REVIEW:Corneal collagen cross-linking has recently emerged as a novel approach for management of ectasia. This article reviews the literature published in the past 3 years about the expanding spectrum of cross-linking as a therapeutic modality and its complications. RECENT FINDINGS:Recent studies have confirmed the beneficial effects of cross-linking in stabilization and to a lesser extent, regression of keratoconus and postrefractive surgery ectasia. Other applications include cross-linking as a combined procedure with intracorneal ring segments, and photorefractive keratectomy for ectasia, corneal edema, and infectious keratitis. Animal studies of chemical cross-linking of sclera as a potential treatment for progressive myopia have also been performed. Various modifications of the technique to increase the safety profile of cross-linking have been reported, including the use of hypoosmolar riboflavin, transepithelial cross-linking, customized epithelial debridement, and higher fluence shorter duration ultraviolet A light exposure. Reported complications include keratitis, corneal haze, endothelial cell loss and failure of treatment. SUMMARY:Cross-linking has been shown to be an effective modality for corneal ectasia, the regression being less in patients with postrefractive ectasia than keratoconus. In a few studies, it has been found to be effective in symptomatic improvement of bullous keratopathy, and infectious keratitis but further studies are required. Cross-linking with epithelial debridement is found to be most effective but various modifications are being investigated for an improved, and better safety outcome.

journal_name

Curr Opin Ophthalmol

authors

Suri K,Hammersmith KM,Nagra PK

doi

10.1097/ICU.0b013e328354865e

subject

Has Abstract

pub_date

2012-07-01 00:00:00

pages

280-7

issue

4

eissn

1040-8738

issn

1531-7021

journal_volume

23

pub_type

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