Posters

Topography-guided photorefractive keratectomy and collagen cross-linking for post-LASIK ectasia

Poster Details

First Author: S.Holland CANADA

Co Author(s):    D. Lin   A. Covello   S. Arba Mosquera   V. Shwetabh   J. Hodgen   J. Tan     

Abstract Details

Purpose:

Evaluation of early results of Topography-guided Photorefractive Keratectomy (TG-PRK) for post-LASIK ectasia (EC) with cross linking CXL) with Schwind Amaris 1050 (SA)

Setting:

Laser Eye Centre

Methods:

Retrospective serial case series. Aim - evaluation of the outcome of post-LASIK ectasia eyes that underwent treatment with the Schwind Amaris 1050 excimer laser with CXL with Athens protocol. Preoperative and post-operative uncorrected distance visual acuitys (UDVA), corrected distance visual acuity (CDVA), manifest refraction (MR) and topographic cylinder were analyzed after 12 months of follow-up.

Results:

24 had sufficient data at 12 months for analysis. 18 of 24 (75%) showed UDVA ≥20/40 post-operatively.  9 (38%) had improved CDVA and 5 (21%) gained 2 or more lines while none lost 2 or more lines.  No case showed progression. Mean astigmatism was reduced from 3.14±1.50D to 0.96±0.87D. Mean spherical equivalent was improved from -2.23±4.06D to -0.67±1.75D.

Conclusions:

Early results of TG-PRK CXL with Schwind Amaris 1050 show efficacy and safety as treatment for post-LASIK ectasia. Most cases (75%) had UDVA ≥20/40 at one year and 38% had CDVA improved. The technique is an alternative treatment for post-LASIK ectasia with contact lens intolerance but longer follow up is needed to show stability.

Financial Disclosure:

... is employed by a for-profit company with an interest in the subject of the presentation, ... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented