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One‐year visual outcomes and optical quality of femtosecond laser small incision lenticule extraction and Visian Implantable Collamer Lens (ICL V4c) implantation for high myopia
Author(s) -
Niu Lingling,
Miao Huamao,
Tian Mi,
Fu Dan,
Wang Xiaoying,
Zhou Xingtao
Publication year - 2020
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/aos.14344
Subject(s) - ophthalmology , medicine , femtosecond , astigmatism , small incision lenticule extraction , visual acuity , optometry , phakic intraocular lens , laser , optics , refractive error , physics , keratomileusis
Abstract Purpose To compare one‐year visual outcomes and optical quality after femtosecond laser small incision lenticule extraction (SMILE) and Visian Implantable Collamer Lens with a central hole (ICL V4c) implantation for high myopia. Methods This prospective non‐randomized study included 37 eyes of 20 patients who underwent SMILE (G‐S) and 39 eyes of 20 patients who underwent ICL V4c implantation (G‐V). Spherical equivalent (SE), uncorrected distance visual acuity, corrected distance visual acuity, retinal image quality and intraocular scattering were evaluated at one year after surgery. Each model was adjusted for age, gender, eye and preoperative SE during treatment. Results At the one‐year follow‐up, G‐S and G‐V showed similar safety index (1.13 ± 0.13 and 1.11 ± 0.15, respectively) and efficacy index (1.05 ± 0.14 and 1.06 ± 0.15, respectively). All 21 eyes with Toric ICL (TICL) had a postoperative astigmatism of ≤0.5 dioptres (D), while the astigmatism was ≤0.5 D in all G‐S eyes. Thirty‐six G‐S eyes (97%) and 35 G‐V eyes (90%) were within ± 0.5 D of the target SE. The changes in the modulation transfer function cut‐off frequency (MTF cut‐off ) and the objective scatter index from before operation to one year following the operation were not significantly different between the groups (p = 0.523 and 0.826, respectively). Conclusion Both SMILE and ICL V4c implantation provide good safety, efficacy, predictability, and stability in correcting high myopia. Optical quality including intraocular scattering was great and relatively stable in both groups during the one‐year observation period.