Abstract
Introduction: In this article, we propose a new application for eyelid surface electromyography (sEMG). By placing the electrode in the mid-pretarsal area of the upper eyelid, one can easily perform a fast examination and achieve repeatable results. We believe that this technique may increase the feasibility of eyelid sEMG in clinical practice. Methods: 126 sEMG examinations of the upper eyelid were performed by using the above-described method. Thirty-nine controls and 29 ptotic patients were enrolled. The controls underwent one measurement while the ptotic patients were employed for four sessions: Before anterior approach levator aponeurosis advancement (LAA), 2 weeks, 3 months, and more than 6 months after surgery. The relaxation and maximal contraction of the orbicularis oculi muscle (OOM) using root mean square (RMS) values were measured. Results: The results showed a statistically significant decrease in RMS values of the maximal contraction of the OOM 2 weeks after surgery (p < 0.05) and 3 months after surgery (p = 0.03). Six months postoperatively, there were no statistically significant differences in OOM activity compared to preoperative values (p = 0.2). Conclusions: Eyelid sEMG may be a useful diagnostic tool in post-operative OOM recovery monitoring. sEMG parameters of the maximal contraction of the OOM normalize within 6 months after anterior approach LAA. Electrode placement in the mid-pretarsal area of the upper eyelid offers several advantages and therefore may enhance the feasibility of sEMG in clinical practice.
Highlights
IntroductionWe propose a new application for eyelid surface electromyography (sEMG)
In this article, we propose a new application for eyelid surface electromyography
The experiment showed that it is possible to implement the proposed technique in The experiment showed that it is possible to implement the proposed technique in healthy individuals and patients with ptosis. It may be useful in clinical practice, as it is easy healthy individuals and patients with ptosis
Summary
We propose a new application for eyelid surface electromyography (sEMG). By placing the electrode in the mid-pretarsal area of the upper eyelid, one can perform a fast examination and achieve repeatable results. We believe that this technique may increase the feasibility of eyelid sEMG in clinical practice. Methods: 126 sEMG examinations of the upper eyelid were performed by using the above-described method. The controls underwent one measurement while the ptotic patients were employed for four sessions: Before anterior approach levator aponeurosis advancement (LAA),. Many of the anterior-approach oculoplastic procedures require an incision or resection of the orbicularis oculi muscle (OOM). Resecting the OOM in the anterior approach LAA may lead to lagophthalmos. It has not been established whether the OOM fully recovers from the anterior-approach ptosis surgery
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