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Intracorneal keraring segments implantation alone versus sequential implantation and corneal collagen crosslinking in management of keratoconus

Poster Details

First Author: m.saif EGYPT

Co Author(s):    H. Elsaftawy   M. Hassan   R. Mousa        

Abstract Details


To evaluate the refractive, topographic ,and pachymetric, outcomes ,one , three and six months after corneal insertion of intra stromal corneal ring segments alone in keratoconic eyes and in those followed by corneal cross-linking.


Multicentre study , Research Institute Of Ophthalmology , Banisweif university and Memorial Institute Of Ophthalmology, Cairo Egypt.


This retrospective comparative study included 40 consecutive eyes of 29 patient with progressive, mild to moderate keratoconus that were randomly divided into two groups. Group 1 included 20 eyes that underwent kerarings (Mediphacos Inc., Belo Horizonte, Brazil) implantation alone and group 2 included 20 eyes that underwent kerarings insertion followed by CXL one month later. In both groups channel creation was performed manually.


There was statistically significant improvement in both groups’ uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA), with significant reduction in refractive error and keratometric values (p<0.05). There was no statistically significant difference between both groups regarding the changes in UDVA, CDVA and refractive error (p>0.05). However, group 2 revealed more statistically significant reduction in spherical refraction after 3m and highly significant improvement after 6m.


ICRS implantation is an effective method for visual and refractive improvement in keratoconic eyes. However, the addition of CXL to the procedure stops the progression of the disease and provides greater improvements in spherical refraction than kerarings implantation alone.

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