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PRACTICABILITY OF USE OF CONTACT LENSES AT LOW ATMOSPHERIC PRESSURES

PRACTICABILITY OF USE OF CONTACT LENSES AT LOW ATMOSPHERIC PRESSURES Abstract Present standards for personnel of military planes require that crew members have good vision without glasses. The use of ordinary spectacles is considered impractical. Since many persons otherwise qualified are excluded from this branch of the service, in a time of great need, by reason of ametropia, the question may be fairly asked, "Can contact lenses be used practicably in planes at the altitudes commonly attained in modern warfare?" The observations here reported were made in an attempt to answer this question. Numerous studies of ocular function have been made under conditions of low atmospheric pressure, and hence low partial pressure of oxygen. These studies were reviewed by McFarland, Evans and Halperin.1 In modern flying, plane personnel need not experience lack of oxygen, since oxygen may be supplied by means of a mask. A normal supply of oxygen to the cornea via the blood stream and the intraocular fluid References 1. McFarland, R. A.; Evans, J. N., and Halperin, M. H. : Ophthalmic Aspects of Acute Oxygen Deficiency , Arch. Ophth. 26:886 ( (Nov.) ) 1941.Crossref 2. The late Dr. Sanford R. Gifford and Dr. Theodore Zekman referred the subjects for study, and Dr. Gifford gave advice in the investigation. 3. Dr. A. C. Ivy, head of the department of physiology, Northwestern University Medical School, gave the use of the pressure chamber, and Dr. Harry F. Adler, of the same department, operated the chamber and offered valuable suggestions in the course of the experiment. 4. Subject 7 was in both the 18,000 to 20,000 foot (5,400 to 6,000 meter) and the 30,000 foot (9,000 meter) group. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Ophthalmology American Medical Association

PRACTICABILITY OF USE OF CONTACT LENSES AT LOW ATMOSPHERIC PRESSURES

JAECKLE, CHARLES E.
Archives of Ophthalmology , Volume 31 (4) – Apr 1, 1944
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References (1)

Publisher
American Medical Association
Copyright
Copyright © 1944 American Medical Association. All Rights Reserved.
ISSN
0003-9950
eISSN
1538-3687
DOI
10.1001/archopht.1944.00890040064011
Publisher site
See Article on Publisher Site

Abstract

Abstract Present standards for personnel of military planes require that crew members have good vision without glasses. The use of ordinary spectacles is considered impractical. Since many persons otherwise qualified are excluded from this branch of the service, in a time of great need, by reason of ametropia, the question may be fairly asked, "Can contact lenses be used practicably in planes at the altitudes commonly attained in modern warfare?" The observations here reported were made in an attempt to answer this question. Numerous studies of ocular function have been made under conditions of low atmospheric pressure, and hence low partial pressure of oxygen. These studies were reviewed by McFarland, Evans and Halperin.1 In modern flying, plane personnel need not experience lack of oxygen, since oxygen may be supplied by means of a mask. A normal supply of oxygen to the cornea via the blood stream and the intraocular fluid References 1. McFarland, R. A.; Evans, J. N., and Halperin, M. H. : Ophthalmic Aspects of Acute Oxygen Deficiency , Arch. Ophth. 26:886 ( (Nov.) ) 1941.Crossref 2. The late Dr. Sanford R. Gifford and Dr. Theodore Zekman referred the subjects for study, and Dr. Gifford gave advice in the investigation. 3. Dr. A. C. Ivy, head of the department of physiology, Northwestern University Medical School, gave the use of the pressure chamber, and Dr. Harry F. Adler, of the same department, operated the chamber and offered valuable suggestions in the course of the experiment. 4. Subject 7 was in both the 18,000 to 20,000 foot (5,400 to 6,000 meter) and the 30,000 foot (9,000 meter) group.

Journal

Archives of Ophthalmology – American Medical Association

Published: Apr 1, 1944

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