These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Comparison of ocular higher-order aberrations after SMILE and Wavefront-guided Femtosecond LASIK for myopia.
    Author: Chen X, Wang Y, Zhang J, Yang SN, Li X, Zhang L.
    Journal: BMC Ophthalmol; 2017 Apr 07; 17(1):42. PubMed ID: 28388896.
    Abstract:
    BACKGROUND: To compare changes in higher-order aberrations (HOAs) following small incision lenticule extraction (SMILE) and wavefront-guided femtosecond laser-assisted in situ keratomileusis (WFG FS-LASIK), and to investigate correlations between preoperative spherical equivalence (SE) and components of HOAs affecting visual quality. METHODS: Sixty-five myopic eyes from 38 patients were enrolled in the study retrospectively, either having undergone SMILE or WFG FS-LASIK. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), refractive error, and individual Zernike coefficients of 3rd- to 6th-order HOAs were measured before and 3 months after the surgeries and were compared using the Mann-Whitney test or Student's t-test. Additional generalized estimating equation analyses (GEE) were used to control for within-subject biases in individual Zernike coefficients between the right and left eyes of the same patients. RESULTS: There was no significant difference in UDVA or CDVA after WFG FS-LASIK (Mean ± SD: -0.02 ± 0.07 and -0.04 ± 0.22 respectively, in logMAR) and after SMILE (-0.01 ± 0.06 and -0.04 ± 0.04 respectively). However, greater vertical coma aberration was found after SMILE (p = 0.036). Preoperative SE was correlated to induced horizontal coma (r = -0.608, p = 0.001) in WFG FS-LASIK, and correlated to induced vertical coma (r = -0.459, p = 0.003) in SMILE. CONCLUSIONS: Both SMILE and WFG FS-LASIK can achieve planned visual outcomes in correcting myopia and myopic astigmatism. However, higher vertical coma was shown in SMILE than WFG FS-LASIK which might be a potentially impact factor for patients' vision under certain lighting conditions and needs further investigation.
    [Abstract] [Full Text] [Related] [New Search]