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Multifactorial etiology of postoperative vision loss.

2003; Lippincott Williams & Wilkins; Volume: 23; Issue: 1 Linguagem: Inglês

10.1097/00041327-200303000-00030

1536-5166

Thomas R. Mizen,

Intraoperative Neuromonitoring and Anesthetic Effects

Benumof JL, Mazzei W. Multifactorial etiology of postoperative vision loss. Anesthesiology 2002 96:1531–2. The authors discuss the limitations of checking the orbits with a soft foam cushion: the mere checking of the globes would involve removing the cushion, which changes the relationship of the orbits to the support from the foam cushion. A newer model allows direct visualization of the globes without removing the device. Additionally, the facial anatomy may preclude globe compression in patients with a low nasal bridge. The positioning of the patient with the head lower than the abdomen may alter facial and orbital venous pressure. Neosynephrine infusion to prevent hypotension may be used clinically, but its effects on ocular circulation are unknown.