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BANKS ANDERSON, JR., MD; HERBERT A. SALTZMAN, MD

Arch Ophthalmol. 1964;72(6):792-795.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Lanphier¹ has observed that the loss of visual function following occlusion of ocular circulation (as by ophthalmodynamometry) occurs less rapidly if the subject is breathing 100% oxygen at 3 atmospheres pressure. This blackout of visual function is similar to that reported by pilots under positive g conditions and recently investigated by Jaeger et al using a plethysmographic goggle.² For subjects breathing 100% oxygen, theoretical arterial oxygen concentrations may be calculated for any pressure.* These concentrations may then be compared with the time to blackout of visual function at various high atmospheric pressures and a rate of oxygen utilization thereby determined. Such determinations and calculations are the subject of this paper.

Method

Four normal young subjects whose ophthalmic artery pressures had previously been determined by both the Bailliart ophthalmodynamometer and the transducer ophthalmodynamometer supplied with the Mueller tonography apparatus were selected. The left eye was occluded with an adhesive . . . [Full Text PDF of this Article]

Author Affiliations
Durham, NC

Assistant Professor of Ophthalmology (Dr. Anderson) and Assistant Professor of Medicine (Dr. Saltzman), Duke University School of Medicine.

Footnotes
Submitted for publication May 11, 1964.

This study was supported in part by grants HE-07896, AM-01596, and 2E-236 of the National Heart Institute, 2B-5232 of the National Institute of Neurological Diseases and Blindness of the National Institutes of Health, and by the North Carolina Heart Association.

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