Figure - available from: Clinical Case Reports
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Blink reflex in response to supraorbital nerve stimulation. The upper pairs of traces represent reflex responses in the right (R) and left (L) orbicularis oculi muscles after stimulation of the right supraorbital nerve (R*). The lower pairs of traces represent reflex responses in the right (R) and left (L) orbicularis oculi muscles after stimulation of the left supraorbital nerve (L*). (A) Preoperative blink reflex. The ipsilaterally stimulated left R1 response (arrow) was smaller than the ipsilaterally stimulated right R1 response (arrowhead). (B) Postoperative blink reflex. The ipsilaterally stimulated left R1 response (white arrow) was equivalent to the ipsilateral stimulated right R1 response (white arrowhead).
Source publication
A 57-year-old man had trigeminal schwannoma in Meckel's cave with eyelid myokymia only. The evaluation of the trigeminal-evoked blink reflex was useful for confirming eyelid myokymia and contributed to surgical decision-making. In patients with persistent eyelid myokymia, neurophysiological and imaging evaluations may be useful for determining the...
