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Penetrating keratoplasty for keratoconus followed by MyoRing implantaion

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Session Details

Session Title: Photoablation, Cross-Linking and Intracorneal Ring Segment

Session Date/Time: Monday 07/09/2015 | 08:00-10:30

Paper Time: 08:48

Venue: Room 16

First Author: : A.Daxer AUSTRIA

Co Author(s): :                        

Abstract Details

Purpose:

Penetrating Keratoplasty for the treatment of Keratoconus often results in significant corneal irregularities and insufficient visual acuity. Here I present cases after penetrating keratoplasty with unsatisfactory visual results who were treated by MyoRing implantation at least 3 years after the post-keratoplasty suture removal.

Setting:

Gutsehen Eye Center and Department of Ophthalmology, Medical University of Innsbruck, Austria

Methods:

Five eyes of 5 patients between 31 and 54 years of age who had keratoplasty for keratoconus were treated. A corneal pocket of 9 mm diameter and 300 microns depth was created via a small corneal access using the PocketMaker Ultrakeratome (DIOPTEX GmbH, Austria) at least 3 years after post-keratoplasty suture removal. After creation of the corneal pocket a MyoRing (DIOPTEX GmbH, Austria) was inserted into the corneal pocket. All eyes had preoperatively Uncorrected Distance Visual Acuity (UDVA) of counting finger and either spherical or cylindrical values of the mainifest refraction exceeded 8 dioptres.

Results:

UDVA improved in every case to values above 0.5 (20/40) with spherical values equal or close to plano and cylindrical values below 2 dioptres 3 months after treatment. Except in one eye, where a dehiscence over a distance of 2 clock hours between donor and host cornea occoured which were re-sutured, no intra- or postoperative problems occured. Also in the problem eye the MyoRing could also be inserted without problems. The suture in this single case was removed after 4 months without any further problems.

Conclusions:

MyoRing implantation after insufficient penetrating keratoplasty is a safe and effective option to improve the patients vision and satisfaction. In order to avoid a dehiscence between host and donor cornea we recommend to perform MyoRing implantation not earlier than 3 years after post-keratoplasty suture removal.

Financial Interest:

One of the authors has significant investment interest in a company producing, developing or supplying product or procedure presented

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