Accession Number : AD0780319

Title :   Visual Field Perimeter and Distortion in Diving Masks.

Descriptive Note : Final rept.,

Corporate Author : NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C

Personal Author(s) : Workman,R. D. ; Prickett,C. M.

Report Date : 01 FEB 1957

Pagination or Media Count : 50

Abstract : The evaluation was made to determine limitation of visual field perimeter and distortion within this perimeter for various diving masks. The report describes use of the perimeter detector and measurement of the visual field and distortion while wearing various diving masks. Restriction of the visual field by the diving masks evaluated was found to be from 40 to 50 degrees. Distortion was found only in the outer 2 degrees of the visual field. The results are discussed and recommendations are made for masks with the least restricted visual field. A standard masks with the least restricted visual field. A standard evaluation procedure is outlined for use in determining visual Field restriction and distortion in diving masks. (Author)

Descriptors :   *Vision, *Breathing masks, *Diver equipment, Distortion, Measurement

Subject Categories : Life Support Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE