Wavefront aberrations in eyes with decentered ablations

Abstract

Eyes with decentered ablations had a significantly higher magnitude of induced aberrations and lower UCVA than eyes with well-centered ablations.

The influence of the aspheric profiles for transition zone on optical performance of human eye after conventional ablation

“…These results indicated that the centration errors exerted a significant influence on the residual wavefront aberrations [8]. Decentrations during refractive surgery may account for a portion of the postoperative increases in higherorder aberrations [9,10].…”

Simulated effect of aspheric transition zone ablation profiles on optical aberrations after customized myopia ablation

“…These results revealed that the decentration had an important influence on the postoperative wavefront aberrations [8]. Wang et al reported that mean pupil centroid shift was 0.29 mm during wavefront-guided corneal ablation [9].…”

Errors in Treatment of Lower-order Aberrations and Induction of Higher-order Aberrations in Laser Refractive Surgery

“…One such study was a retrospective chart review of 3719 eyes undergoing LASIK for myopia, which found a total of 46 eyes (1.2%) with topographically-determined decentration. 44 Decentration of the ablation profile can be caused by a number of intraoperative factors, including treatment displacement (a shift in the specified treatment location), eye movements such as drift, or poor patient fixation. 45 Stromal drying has also been suggested to contribute to decentration risks, as this may induce poor patient visualization of the fixation beam.…”

“…To support suspicion of clinical relevance, they also correlated ablation profile decentration with a lower uncorrected visual acuity. 44 …”