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Canadian Journal of Anesthesia, Vol 25, 433-435, Copyright © 1978 by Canadian Anesthesiologists' Society

Transient Unilateral Blindness following General Anaesthesia: Case Report

K. A. MUNN C.D., M.D.1, R. T. WILLIAMS M.D., F.R.C.P.(C)2, and C. M. SHAFTO D.O.M.S., F.R.C.S.(C)2

1 Department of Ophthalmology, Foothills Hospital, 1403-29th Street N.W., Calgary, Alta., T2N 2T9
2 Department of Ophthalmology, Foothills Hospital, 1403-29th StreetN.W., Calgary, Alta., T2N 2T9

A case is reported of transient unilateral blindness following general anaesthesia with a face mask. The most likely explanation for this is central retinal artery occlusion, either partial or complete, due to excessive pressure from the mask exerted on the globe. This pressure may be increased with the use of neoprene head straps as opposed to the more flexible and elastic rubber straps. Pressure from the strap over the carotid artery may be a factor in reducing the central retinal arterial pressure, thus making it more susceptible to occlusion by mask pressure.






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Copyright © 1978 by the Canadian Anesthesiologists' Society.