BACKGROUND In most publications about myasthenia, monitoring neuromuscular blockade during anesthesia is recommended. In healthy patients, the relation of blockade between muscles has been established, but there is little information about the relation in myasthenic patients. Our objective was to investigate whether the relation between the orbicularis oculi and adductor pollicis muscles is the...

We have studied the pattern of blood flow and pharmacodynamic profile of mivacurium-induced block at the adductor pollicis and orbicularis oculi muscles. We studied 30 adult patients anaesthetized with fentanyl, thiopentone, nitrous oxide-isoflurane, and mivacurium 0.2 mg kg-1. Neuromuscular transmission was monitored with accelerometry (TOF Guard, Biometer, Denmark). Blood flow was measured at...

purpose: to evaluate the outcomes of ptosis surgery in patients with weak levator function using orbicularis oculi and frontalis muscles. methods: this prospective interventional case series study was conducted over 3 years on patients with ptosis and weak levator function (less than 4mm). in all cases, orbicularis oculi and frontalis muscles were used directly to correct the ptosis. success wa...

PURPOSE To clarify anatomically the facial nerve branches in the eyelids and periorbit. METHODS The facial nerve branches of the left periorbits from 31 Japanese cadavers were dissected under a surgical microscope. RESULTS The temporal, zygomatic, and deep buccal branches assembled posterior to the orbicularis oculi from its temporal or inferior side, and formed a dense plexus. The superfic...

Eyelid bags and blepharochalasis are the result of relaxation of lid structures like the skin, the orbicularis oculi, and mainly the orbital septum. Therefore, this aged appearance cannot be improved sufficiently with only a skin and orbicularis oculi resection. To improve this appearance, we use a very effective method of tucking of the orbital septum with infraeyebrow excision of the skin and...

The early and late components of the orbicularis oculi reflex were absent bilaterally in three patients who fulfilled the clinical and electroencephalographic criteria of brain death. A response to peripheral facial nerve stimulation was obtained in all. These preliminary observations suggest that the study of the orbicularis oculi reflex is a simple, objective, bedside neurophysiological test ...

Ten patients who were unable to initiate or sustain eye opening in the absence of overt spasm of the orbicularis oculi, were investigated. In five, the problem was isolated. Three had Parkinson's disease and two progressive supra-nuclear palsy for between one to six years before the eye opening difficulty developed. The clinical features and electrophysiological investigation suggested that the...

OBJECTIVE To design a bidimensional facial movement measuring tool and study its reliability. METHODS We utilized the free video-analysis software Kinovea that can track preselected points during movements and measure two-point distances off-line. Three raters positioned facial markers on 10 healthy individuals and video-taped them during maximal bilateral contractions of frontalis, corrugato...

BACKGROUND The techniques of lower blepharoplasty are evolving to reflect the concept that the lower eyelid contour does not stop at the inferior orbital rim, and that the lid-cheek junction must often be modified to restore the midface to a youthful configuration. Multiple procedures have been proposed to smooth the lid-cheek junction and tear trough. The author proposes a technique of carbon ...

OBJECTIVE Although the mixed orbicularis oculi muscle lacks the muscle spindles required to induce reflex contraction of its slow-twitch fibers, the mechanoreceptors in Müller's muscle function as extrinsic mechanoreceptors to induce reflex contraction. We hypothesize that strong stretching of these mechanoreceptors increases reflex contraction of the orbicularis oculi slow-twitch muscle fibers...