Posters

Demarcation line depth after contact-lens-assisted modified accelerated corneal collagen cross-linking in markedly thin corneas

Poster Details

First Author: A.Sherif EGYPT

Co Author(s):    A. Hafez                    

Abstract Details

Purpose:

To evaluate  the effectiveness of a  modified accelerated epithelium off corneal collagen cross-linking technique in ectatic corneal conditions with very thin corneas.

Setting:

Rowad Cornea Center and Dar el Oyoun Eye hospital, Giza, Egypt

Methods:

23 eyes of 17 patients  interventional case series (14 with  progressive keratoconus (82.4%) and 3 with progressive post-LASIK ectasia  (17.6%) All with corneal thickness less than 400 microns at thinnest point. All cases underwent epithelium off  accelerated CXL  ( UVA 9mw/cm2 for 10 minutes). To prevent potential endothelial toxicity due to thin stroma , a soft disposable polymer contact lens without a UV blocking filter (Soflens, Bausch and Lomb)  was applied over  cornea before initiating UVA exposure. A month after surgery presence and depth of demarcation line documented using Anterior segment OCT (Cirrus HD, Carl Zeiss, Germany)

Results:

A clear demarcation line was detected in all eyes with a mean depth of 259 ± 73 microns measured from the epithelia surface of the cornea

Conclusions:

The comparable results to other accelerated CXL protocolsresults suggest that using a  contact lens without a  UV blocker  is an effective CXL technique in thin corneas .

Financial Disclosure:

None