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Vienna 2018 Delegate Registration Programme Exhibition Virtual Exhibition Satellites 2018 Survey


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The comparison of peripheral corneal stromal demarcation line depth percentages after standard and accelerated collagen cross-linking

Poster Details

First Author: A.Çiçek TURKEY

Co Author(s):    D. Ulusoy                    

Abstract Details


To assess the effectiveness of accelerated cross-linking (CXL) on cornea periphery by comparing stromal demarcation line (SDL) depths in accelerated CXL with conventional CXL.


Health Sciences University, Kayseri Education and Research Hospital, Department of Ophthalmology


Patients with progressive keratoconus who applied conventional 30 minutes CXL with 3 mW/cm2 (conventional group) or accelerated 10 minutes CXL with 9 mW/cm2 (accelerated group) were involved in the study. The SDL was measured in central and 3 mm periphery at the postoperative first month by using anterior segment optical coherence tomography. The SDL in the periphery was calculated as proportion of central for each group seperately (SDL in the periphery / SDL in the central*100). The proportions were compared between two groups.


The mean SDL percentages at 3-mm periphery ( superior, inferior, temporal, nazal) in conventional group were 84 ± 14, 76± 18, 77 ± 12 ve 71 ± 12, respectively. The same measurements in accelerated group were 74 ± 12, 76 ± 08, 70 ± 12 and 70 ± 12, respectively. Apart from the superior peripheral cornea there was no difference between two groups (p: 0.079). The SDL percentage at superior cornea was lower in accelerated group compared to conventional group (p: 0.044).


The SDL percentage at superior cornea is lower in accelerated group compared to conventional group. It is a convenient advice to think again while deciding application of accelerated CXL in conditions effecting superior cornea.

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