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Changes in Corneal Deformation Parameters after Lenticule Creation and Extraction during Small Incision Lenticule Extraction (SMILE) Procedure

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  • Yang Shen
  • Jing Zhao
  • Peijun Yao
  • Huamao Miao
  • Lingling Niu
  • Xiaoying Wang
  • Xingtao Zhou

Abstract

Purpose: To investigate the effects of lenticule creation and subsequent corneal lenticule extraction on corneal deformation parameters during small incision lenticule extraction (SMILE) procedure. Materials and Methods: In this prospective study, 18 eyes of 10 patients (27.90±7.11 years, −5.64±2.45 diopters) scheduled for SMILE procedure were enrolled. Changes in the corneal deformation parameters, including deformation amplitude (DA), applanation time(AT1 and AT2), applanation length(AL1 and AL2), corneal velocity(CV1 and CV2), peak distance(P.Dist.), radius and intraocular pressure values were measured preoperatively, immediately after lenticule creation and subsequent to corneal lenticule extraction in all eyes with the Corvis Scheimpflug Technology (Corvis ST, OCULUS, Wetzlar, Germany). Repeated measures analysis of variance (ANOVA) with bonferroni-adjusted post hoc comparisons was performed to investigate changes following each step of the procedure. Results: All surgical procedures were uneventful. A significant difference was detected among the three time points (pre-operation, post-lenticule creation and post lenticule extraction) for AT1 (P 0.05), but there was a significant change in these parameters following subsequent corneal lenticule extraction (post hoc P

Suggested Citation

  • Yang Shen & Jing Zhao & Peijun Yao & Huamao Miao & Lingling Niu & Xiaoying Wang & Xingtao Zhou, 2014. "Changes in Corneal Deformation Parameters after Lenticule Creation and Extraction during Small Incision Lenticule Extraction (SMILE) Procedure," PLOS ONE, Public Library of Science, vol. 9(8), pages 1-8, August.
    • Handle: RePEc:plo:pone00:0103893
    DOI: 10.1371/journal.pone.0103893
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