Posters

KeraRing intrastromal corneal ring segments for keratoconus: 12 month results

Poster Details

First Author: C.Wilde UK

Co Author(s):    S. Naylor   J. Ball   A. Morrell              

Abstract Details

Purpose:

To evaluate the safety and efficacy of Keraring intrastromal corneal ring segment implantation and assess complications. Keratoconus is a progessive corneal ectasia characterised by protrusion and apical thinning. Intrastromal ring segments were approved by NICE in 2007 and improve corneal shape and vision.

Setting:

St James's University Hospital, Leeds.

Methods:

A retrospective case series including 75 eyes of 71 patients with keratoconus. Corneal tunnels were created using the Visumax femtosecond laser followed by manual ring segment implantation. A complete ophthalmic evaluation was performed preoperatively and at 12 months postoperatively including visual acuity, refraction and keratometry.

Results:

41 of 75 eyes (54.3%) had a best corrected visual acuity of 6/12 or better preoperatively which increased to 65 (87.1%) at 12 months. There was a significant reduction in sphere -5.57 +/- 4.13 D to -3.38 +/- 4.07 D (p<0.0001) and cylinder 5.92 +/- 2.94 D to 3.36 +/- 2.34 D (p<0.0001). The mean preoperative maximum keratometry was 52.41 +/- 5.18 D and decreased to 50.23 +/- 5.25 D (p<0.0001) at 12 months. Complications included dry eye (n=2) and glare (n=2). Four Kerarings were repositioned and 4 were removed.

Conclusions:

Keraring implantation is a safe and effective treatment for keratoconus.

Financial Disclosure:

NONE