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Bispectral index sensor as a possible cause of postoperative visual loss after frontal craniotomy
Tsukuba, Japan
* E-mail: soichi2003@aol.com
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Editor—Postoperative visual loss (PVL) after non-ocular surgery is rare, but a devastating complication.1–3 We report a patient with unexpected PVL after brain tumour removal by frontal craniotomy. The development of PVL was attributed to the bispectral index (BIS) sensor (BIS standard, Aspect Medical Systems) fixed on the forehead.
A 38-yr-old female patient was undergoing right frontal