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Analysis of blinking rates after blepharoptosis surgery: a comparison of two surgical techniques Kengo Hayashi 1 , Wakako Hayashi 1 1Yokohama Sakuragicho Eye Clinic pp.717-723
Published Date 2025/6/15
DOI https://doi.org/10.11477/mf.037055790790060717
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Abstract Purpose:The Idra ocular surface analyzer is a diagnostic device for dry eyes that dynamically captures and quantifies blinking. Using this device, we compared the changes in blinking patterns before and after blepharoptosis surgery, through either levator aponeurosis advancement or Müller muscle tucking.

Methods:This study enrolled patients who underwent either levator aponeurosis advancement or Müller muscle tucking between January and June 2023. Blinking was assessed preoperatively and 1 week and 2 months postoperatively. Blink and incomplete blink rates were retrospectively evaluated from medical records.

Results:The levator aponeurosis advancement group included 23 eyes(14 patients), while the Müller muscle tucking group included 24 eyes(13 patients). In the levator aponeurosis advancement group, the mean blink rate was 15.2±7.1 preoperatively, 10.1±4.1 at 1 week(p=0.004), and 13.2±7.5 at 2 months postoperatively(n.s.). In the Müller muscle tucking group, the mean blink rate was 13.7±6.3 preoperatively, 10.5±6.6 at 1 week(p=0.038), and 12.2±6.2 at 2 months postoperatively(n.s.). The incomplete blink rate in the levator aponeurosis advancement group was 19.8±4.1% preoperatively, 37.1±5.3% at 1 week(p=0.002), and 31.9±4.5% at 2 months postoperatively(p=0.013), while in the Müller muscle tucking group, this rate was 18.1±4.3% preoperatively, 33.1±7.0% at 1 week(p=0.027), and 21.2±5.5% at 2 months postoperatively(n.s.).

Conclusion:The blink rate was significantly lower in both groups at 1 week postoperatively, with full recovery by 2 months. The incomplete blink rate was significantly higher in both groups at 1 week postoperatively;however, at 2 months, a significant increase persisted only in the levator aponeurosis advancement group. This difference may be attributed to the development of postoperative dry eyes in patients who underwent levator aponeurosis advancement.


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