Relationship Between Decentration and Induced Corneal Higher-Order Aberrations Following Small-Incision Lenticule Extraction Procedure

Investigative Ophthalmology & Visual Science
Hun LeeTae-Im Kim

Abstract

To investigate the amount of lenticule decentration following small-incision lenticule extraction (SMILE) by using the Keratron Scout tangential topography difference map, and the relationship between the magnitudes of total decentration and induced corneal higher-order aberrations (HOAs). This retrospective observational case series study analyzed decentration values obtained from the Keratron Scout tangential topography difference map of 360 eyes (360 patients) that underwent SMILE. Root mean square total HOAs, third order coma aberration, fourth order spherical aberration, as well as individual coefficients for vertical and horizontal coma were measured preoperatively and 3-months postoperatively. Simple linear regression analysis and piecewise regression models were used to determine the relationship between the magnitudes of total decentration and induced corneal HOAs. The mean total decentration distance from the corneal vertex was 0.36 ± 0.22 mm (range, 0.02-1.27 mm). There were significant differences in total HOAs, coma, vertical and horizontal comas, and spherical aberration between preoperative and 3-month postoperative assessments. Significant relationships between the magnitudes of total decentration and induced co...Continue Reading

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Citations

Nov 12, 2019·Journal of Refractive Surgery·Marcus BlumWalter Sekundo
Apr 10, 2020·Journal of Cataract and Refractive Surgery·Anders GyldenkerneAnders Ivarsen
Oct 1, 2019·Asia-Pacific Journal of Ophthalmology·Quan LiuDennis S C Lam
May 29, 2021·Journal of Refractive Surgery·Kishore Raj Pradhan, Samuel Arba-Mosquera
Sep 2, 2021·Journal of Cataract and Refractive Surgery·Li LiZheng Wang
Dec 22, 2021·Translational Vision Science & Technology·Yong TangZhikuan Yang

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