Posters

Outcome of topography-guided photorefractive keratectomy with cross-linking for post-LASIK ectasia with high speed laser

Poster Details

First Author: M.Al Obthani CANADA

Co Author(s):    D. Lin   S. Holland   S. Arba Mosquera              

Abstract Details

Purpose:

Evaluation on 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 Refractive Clinic

Methods:

Retrospective 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 modified Dresden 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:

15 had sufficient data at 12 months for analysis. 11 of 15 (73%) showed UCVA ≥20/40 post-operatively. 7 (47%) had improved CDVA and 5 (33%) gained 2 or more lines (p=0.03) while none lost 2 or more lines. No patient showed progression. Mean astigmatism was reduced from 3.43±1.35D to 0.90±0.89D (p=0.0008). Mean spherical equivalent was improved from -3.33±4.79D to -0.82±2.12D (p=0.05).

Conclusions:

Early results of TG-PRK CXL with Schwind Amaris 1050 show efficacy and safety as treatment for post-LASIK ectasia. Most cases (73%) had UDVA ≥20/40 at one year and 33% had CDVA improved ≥2 lines. The technique demonstrates an alternative treatment for post-LASIK ectasia with contact lens intolerance but longer follow up is needed.

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, receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented