Posters

Super vision after myopic advanced surface ablation: a myth?

Poster Details

First Author: F.Camesasca ITALY

Co Author(s):    P. Vinciguerra   R. Vinciguerra                 

Abstract Details

Purpose:

To investigate features of myopic patients that underwent advanced surface ablation (ASA) and acquired visual acuity above 0.1 LogMAR.

Setting:

Department of Ophthalmology, Humanitas Research Hospital, Rozzano, Milan, Italy

Methods:

Retrospective trial of myopic eyes that had refractive surgery consecutively treated with transepithelial advanced surface ablation with a 1,050-Hz excimer laser coupled with the Smart Pulse Technology ablation software. The SPT algorithm is a laser pulse technology software aimed at reducing surface irregularity of the stromal bed at the end of treatment. The authors evaluated the effect of this smoothing on final visual acuity.  Patients were observed for 6 months.

Results:

Out of 40 evaluated eyes, 16 eyes (16 patients, 40%) attained visual acuity greater than 0.1 LogMAR at six months.  Preoperative BSCVA was 0.05±0.91 logMAR with a mean subjective SE correction of -5.43±2.64 D (range: from -1.63 D to -10.75 D). Preoperative cycloplegic SE defect was -5.43±2.64 D, and SE excimer laser setting was -5.44±2.41 D (range: from -1.83 D to -9.44 D). Mean optical and transition zone diameter were, respectively, 7.58±0.42 mm and 1.87±0.53 mm.  Uncorrected distance visual acuity reached -0.10±0.77 logMAR at 6 months. Coma and trefoil improved significantly with time.

Conclusions:

Unaided visual acuity well above 0.1 LogMAR after ASA is common, and can be attained also in highly myopic eyes. Accurate preoperative refractive measurement and wide optical zones were a constant in these eyes.

Financial Disclosure:

... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented