Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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355 degree intrastromal corneal ring for advanced keratoconus

Poster Details

First Author: M. Awadalah EGYPT

Co Author(s):                        

Abstract Details


To evaluate visual outcomes, tomographic and topographic parameters after implantation of 355 degrees intrastromal corneal ring for advance keratoconus using femtosecond laser.


Magrabi Eye Hospital, Cairo, Egypt


Prospective study that included 15 eyes of 11 patients with diagnosis of keratoconus stage III and IV that underwent a 355 degrees intrastromal corneal ring (Keraring, Mediphacos) implantation by a tunnel created by the femtosecond laser (Intralase) . The pocket had 5.9 mm diameter, and the depth was calculated at 80% of the pachymetry at thinnest point of the cornea. Pre and postoperative (3 months) uncorrected and best-corrected visual acuity (UCVA, BCVA respectively), keratometry, pachymetry and elevation maps were evaluated and compared.


Mean uncorrected visual acuity was 1.29 LogMAR preoperatively and 0.51 LogMAR at 3 months (P <0.001). Mean reduction of the maximum keratometry was 4.2 Diopters (D) at 3 months postoperative (p= 0.04). Mean reduction in the spherical equivalent was 4.54D (p< 0.001), and mean reduction in the cylinder was 1.82D (p= 0.003).


355 degrees intrastromal corneal ring by femtosecond laser tunnel is safe and efficacious for correct the refractive error in advanced keratoconus.

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