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Abstract
Purpose
A retrospective comparison of refractive outcomes of a new, aspherically optimized profile with an enhanced energy correction feature (Triple-A) and the conventionally used aspherically optimized profile (ASA, or aberration smart ablation) for correction of low-to-high myopia.
Setting
Augen-OP-Centrum, Cologne, Germany
Design
Retrospective nonrandomized comparative study
Methods
A central database at the Augen-OP-Centrum was used to gather retrospective data for low-to-high myopia (up to −10 D). One hundred and seven eyes (56 patients) were treated with the ASA profile, and 79 eyes (46 patients) were treated with the Triple-A profile. Postoperative outcomes were evaluated at 1 month, 3 months, 6 months, and 1 year follow-up time points.
Results
The Triple-A profile showed better predictability indicated by a significantly lower standard deviation of residuals (0.32–0.34 vs 0.36–0.44, Triple-A vs ASA) in the 6-month to 1-year period. The Triple-A group had better stability across all time intervals and achieved better postoperative astigmatism improvements with significantly lower scatter. This group achieved better safety at 1 year, with 100% of eyes showing no change or gain in Snellen lines, compared with 97% in the ASA group. A better safety index was observed for the Triple-A group at later time points. The Triple-A group had a better efficacy index and a higher percentage of eyes with an uncorrected Snellen visual acuity of 20/20 or greater at all investigated follow-up time points.
Conclusion
The new aspherically optimized Triple-A profile can safely and effectively correct low-to-high myopia. It has demonstrated superiority over the ASA profile in most refractive outcomes.
Disclosure
Matthias Wottke and Dr Georg Sluyterman van Langeweyde are employees of Carl Zeiss Meditec AG (Jena, Germany), and Dr Bertram Meyer is a consultant and clinical investigator for Carl Zeiss Meditec AG (Jena, Germany). The authors report no other conflicts of interest in this work.