Pneumocephalus and headache after epidural analgesia: should we really still be using air?

Eliahoo J, Acheson JF. Changes in intraocular pressure in anesthetized prone patients. J Neurosurg Anesthesiol 2004;16:287–90 3. Cheng MA, Todorov A, Tempelhoff R, McHugh T, Crowder CM, Lauryssen C. The effect of prone positioning on intraocular pressure in anesthetized patients. Anesthesiology 2001;95:1351–5 4. Lee LA, Roth S, Posner KL, Cheney FW, Caplan RA, Newman NJ, Domino KB. The American society of anesthesiologists postoperative visual loss registry: analysis of 93 spine surgery cases with postoperative visual loss. Anesthesiology 2006;105:652–9

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