Posters

The effect of continuous intrastromal corneal ring (MyoRing) implantation on intraocular pressure (IOP) measurements in patients with moderate keratoconus

Poster Details

First Author: M.Abd El-Radi EGYPT

Co Author(s):    M. Gamal Saleh                    

Abstract Details

Purpose:

To compare IOP measurements ( by Goldmann applanation tonometer GAT) before and after implanting continuous intrastromal corneal ring (MyoRing) in patients with moderate keratoconus.

Setting:

Prospective observational study conducted at Tiba eye centre and Assiut university hospitals /Assiut/ Egypt.

Methods:

Patients with moderate keratoconus with K-readings between 50-56 Diopters, corneal thinnest location on pentacam > 380 µm, clear cornea underwent MyoRing implantation using a femtosecond laser system as per standard care. IOP was measured over the central cornea using GAT at base line and after surgery by 1 week, 1 month and 6 months with the readings of month 6 being used in statistical analysis. Preoperative and postoperative Oculus pentacam at 6 months was the standard tool for assessment of pachymetric changes before and after the procedure.

Results:

50 eyes of 40 patients were enrolled in the study ( 30 patients underwent unilateral and 10 patients underwent bilateral MyoRing implantation ). Mean preoperative IOP was 14.3 mmHg while mean postoperative IOP was 13.9 mmHg  with no statistical significance (p value >0.05). Mean preoperative pachymetry at the centre of the cornea was 442.4 µm. Mean postoperative pachymetry at the centre of the cornea was 438 µm with no statistical significance (p value >0.05).

Conclusions:

Implantation of Myoring in patients with moderate keratoconus resulted in a mild decrease in IOP measurements that was neither clinically significant nor statistically significant.

Financial Disclosure:

None