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Title: Higher-order-aberrations following hyperopia treatment : small incision lenticule extraction, laser-assisted in situ keratomileusis and lenticule implantation
Authors: Liu, Yu-Chi
Wen, Jiaxin
Teo, Ericia Pei Wen
Williams, Geraint P.
Lwin, Nyein Chan
Mehta, Jodhbir Singh
Keywords: Engineering::Materials
Issue Date: 2018
Source: Liu, Y.-C., Wen, J., Teo, E. P. W., Williams, G. P., Lwin, N. C., & Mehta, J. S. (2018). Higher-order-aberrations following hyperopia treatment : small incision lenticule extraction, laser-assisted in situ keratomileusis and lenticule implantation. Translational Vision Science & Technology, 7(2), 15-. doi:10.1167/tvst.7.2.15
Journal: Translational Vision Science & Technology
Abstract: Purpose: To compare the postoperative higher-order-aberrations (HOAs) after hyperopic small incision lenticule extraction (SMILE), hyperopic laser-assisted in situ keratomileusis (LASIK), and lenticule implantation for correction of hyperopia. Methods: Eighteen monkeys were divided to six groups: +2.00 D and +4.00 D hyperopic SMILE, +2.00 D and +4.00 D hyperopic LASIK (n = 6 eyes for each), and lenticule implantation with a −2.00 D and −4.00 D lenticule (n = 3 eyes for each). The corneal HOAs were evaluated preoperatively and 3-month postoperatively. Results: At 3-month postoperatively, the spherical aberrations significantly increased toward negative direction in all +4.00 D groups (all P < 0.05). There was a significant change toward more negative values in the third-order vertical coma in the SMILE +4.00 D and LASIK +4.00 D groups (P = 0.026 and P = 0.036, respectively). There were also significant changes in the third-order horizontal trefoil (P = 0.034) and oblique secondary astigmatism (P = 0.012) in the LASIK +4.00 D group. In the eyes that underwent +4.00 D lenticule implantation, the fourth-order horizontal quatrefoil significantly increased (P = 0.029). In low hyperopia correction (+2.00 D), treatment with lenticule implantation tended to have less changes in HOAs, compared to the other two groups. Conclusions: In hyperopic SMILE, hyperopic LASIK or lenticule implantation surgery, significant induction of third- and fourth-order HOAs were seen in moderate hyperopia correction but not in low hyperopia correction. In low hyperopia treatment, lenticule implantation might offer a favorable trend in the aspect of HOAs. Translational Relevance: The results provided the knowledge of surgically induced HOAs and understanding of the effects of surgery in different types of hyperopic correction.
ISSN: 2164-2591
DOI: 10.1167/tvst.7.2.15
Rights: © 2018 The Authors. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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