Free Papers

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

Free Paper Details

First Author: F.Freiberg CANADA

Co Author(s):    D. Lin   S. Holland   M. Bizrah   S. Mosquera   S. Verma        

Abstract Details

Purpose:

To evaluate 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. Post-LASIK ectasia eyes that underwent treatment with the Schwind Amaris 1050 excimer laser with CXL using Athens protocol. Preoperative and post-operative uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction (MR) and topographic cylinder were analyzed after 12 months of follow-up.

Results:

43 had sufficient data at 12 months for analysis. 29 of 43 (67%) showed UDVA ≥20/40 post-operatively. 16 (37%) had improved CDVA and 7 (16%) gained 2 or more lines while 2 (5%) lost 2 or more lines. No case showed progression. Mean astigmatism was reduced from 3.01±1.35D to 1.02±0.97D. Mean spherical equivalent was improved from -1.44±3.25D to -0.26±1.74D.

Conclusions:

Early results of TG-PRK CXL with Schwind Amaris 1050 show efficacy and safety as treatment for post-LASIK ectasia. Two third had UDVA ≥20/40 at one year and 37% 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