Posters

Topography-guided LASIK - Six month outcomes of a prospective study

Poster Details

First Author: E.Manche USA

Co Author(s):    G. Valerio                    

Abstract Details

Purpose:

To evaluate outcomes of topography-guided LASIK in the treatment of myopia and compound myopic astigmatism as part of a prospective study. Outcome measures include quality of vision and quality of life metrics, high contrast snellen acuity, low contrast snellen acuity (5 and 25%), safety, predictability, efficacy, HOA analysis, changes in epithelial thickness maps using anterior segment ocular coherence tomography (AS-OCT).

Setting:

University based

Methods:

Sixty eyes of 30 consecutive myopic patients underwent topography-guided LASIK surgery using the Allegretto excimer laser system. Topography-guided treatments were captured and planned on the Contoura topolyzer system. Mean pre-operative spherical equivalent refraction was -3.39 +/-1.80 diopters. Mean pre-operative cylinder was and -0.66 +/- 0.75 diopters. Epithelial thickness maps were analyzed centrally, superiorly, inferiorly, nasally and temporally preoperatively and at post-operative months one, three and six.

Results:

At post-op month six, mean spherical equivalent refraction was -0.01 +/- 0.30 diopters. Mean cylinder was -0.27 +/- 0.27 diopters. At post-op month six, 100% of eyes had an UDVA of 20/20 and 75% of eyes had an UDVA of 20/16. No eyes lost one or more lines of corrected distance visual acuity at the six-month postoperative visit. There was progressive thickening of the central and paracentral corneal epithelium with progressive thinning of the peripheral corneal epithelium measured with anterior segment ocular coherence tomography over the six month postoperative time period.

Conclusions:

Topography-guided LASIK is safe, effective and predictable in the treatment of patients with myopia and compound myopic astigmatism. Patients reported a high level satisfaction with the outcome of their LASIK surgery. Progressive changes in corneal epithelial thickness maps were seen between the pre-operative visit and the six post-operative month visit.

Financial Disclosure:

research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented