Posters

Allograft corneal ring for keratoconus management: Istanbul Protocole initial clinical results

Poster Details

First Author: S.Hacıagaoglu TURKEY

Co Author(s):    C. Tanriverdi   A. Ozpinar   A. Kilic              

Abstract Details

Purpose:

To report early outcomes of sterile allograft corneal rings in keratoconic eyes in small case series.

Setting:

Istanbul Medipol University School of Medicine, Ophthalmology Department, Istanbul, Turkey

Methods:

This retrospective non-comperative case series included eight eyes of 7 keratoconus patients with a mean follow-up of 3 - 15 weeks. Preoperative and postoperative evaluations included slit lamp examination, uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), spherical equivalent (SE). Mean keratomtery (mean K) values and pachymetry were measured with the scheimpflug topography (Pentacam, Oculus, Wetzlar, Germany). Allograft corneal ring (Halo Sterile Allografts, Lions Vision Gift, Portland, OR, USA) was implanted in corneal tunnels created at 200 microns depth using with femtosecond laser (iFS 150kH, Intralase, Abbott Medical Optics, Santa Ana, CA, USA).

Results:

The mean preoperative UCVA (logMAR) and BCVA (logMAR) increased from 0.93 ± 0.48, 0.85 ± 0.56 to 0.45 ± 0.22 (p=0.027), 0.32 ± 0.18 (p=0.043) at the last follow-up respectively. The mean preoperative SE (D), mean K values (D) and pachymetry (µm) decreased from -6.32 ± 3.32, 49.96 ± 7.06 and 445.62 ± 51.79 to -3.56 ± 4.73 (p=0.091), 45.76 ± 6.34 (p=0.025) and 444.25 ± 22.02 (p=0.889) at the last follow-up respectively. There were no complications or side effects were observed in slit lamp examination.

Conclusions:

Sterile allograft corneal ring implantation was effective to improve vision in keratoconus management. There were no intraoperative complications and the ring segments implantation was relative easy procedure. Larger clinical studies are needed to demonstrate the effectiveness and safety with long term follow-up.

Financial Disclosure:

None