Laser-Assisted In Situ Keratomileusis Using A Novel Aspheric Ablation Algorithm For The Correction Of Myopia And Myopic Astigmatism: Visual And Refractive Outcomes
Published 2024 - 42nd Congress of the ESCRS
Reference: FP08.05 | Type: Free paper | DOI: 10.82333/2rc5-4005
Authors: Karl Stonecipher* 1 , GEORGE WARING IV 2
1OPHTHALMOLOGY,UNIVERSITY OF NORTH CAROLINA,GREENSBORO,United States;OPHTHALMOLOGY,TULANE UNIVERSITY,GREENSBORO,United States;OPHTHALMOLOGY,LASER DEFINED VISION,GREENSBORO,United States, 2WARING VISION INSTITUTE,MOUNT PLEASANT ,United States
Purpose
To evaluate the visual and refractive outcomes of laser-assisted in situ keratomileusis (LASIK) performed with Technolas Teneo 317 (Model 2) using the new laser ablation algorithm (Proscan 1.28 SW) for the correction of myopia and myopic astigmatism.
Setting
Ten clinical sites in the US.
Methods
In this prospective, open-label, non-randomized, single-arm study, 333 eyes of 168 subjects who underwent LASIK using a new laser ablation algorithm of the Technolas Teneo 317 Model 2 (version 1.28 US SW, Bausch & Lomb) were included. Inclusion criteria were corrected distance visual acuity (CDVA) of 20/25 or better and the preoperative manifest refraction spherical equivalent (MRSE) between -1.0 D and -11.50 D with or without astigmatism (sphere between -1.0 D and -10.00 D, cylinder between 0.0 D and -3.0 D). No nomogram adjustments were made, and the patient’s manifest refraction was entered into the laser for treatment. Visual, refractive, and astigmatic outcomes were analyzed at postoperative 9 months.
Results
At postoperative 9 months, UDVA of 20/25 or better was achieved in 97.8% of eyes and 20/40 or better in 99.7% of eyes. All eyes (100%) had postoperative CDVA of 20/25 or better. While 34.8% of the eyes gained 1 or more lines of CDVA, 63.9% of the eyes demonstrated no change. The mean MRSE improved from -5.67 ± 2.52 D preoperatively to -0.04 ± 0.32 D postoperatively, with 92.7% and 99.1% of eyes achieving MRSE within ± 0.50 D and ± 1.00 D, respectively. Between 1 and 9 months postoperatively, 90.2% of eyes maintained MRSE within 0.50 D. The residual refractive cylinder of ≤0.50 D and ≤1.00 D was achieved in 93% and 99.4% of eyes, respectively.
Conclusions
LASIK performed with the novel aspheric ablation algorithm of Technolas Teneo 317 Model 2 excimer laser using the patient’s manifest refraction without any nomogram adjustments was found to be effective for the correction of myopia and myopic astigmatism, yielding excellent visual and refractive outcomes that were stable throughout the postoperative 9-month period.