Accession Number : AD0658642

Title :   TEST OF GLASSES, SUN,

Corporate Author : ARMY MEDICAL RESEARCH LAB FORT KNOX KY

Personal Author(s) : Roberts,Lester B.

Report Date : 29 MAR 1945

Pagination or Media Count : 3

Abstract : The primary purpose of sun glasses is to reduce the effect of excessive glare at high light levels. One-density sun glasses cannot do this optimally for all glare conditions because of the wide range of light intensity and distributions encountered. A one-density universal sun glass must, therefore, represent a compromise with density somewhere in the range between the density of ski goggles and the density necessary to overcome mild glare. Used within this range, and for glare relief only, well designed sun glasses are effective and beneficial and will result in better seeing. Used outside this range, they may be inadequate and actually reduce seeing ability. This report considers the adequacy of the subject sun glasses for use within this 'average' glare range. (Author)

Descriptors :   (*EYEGLASSES, EFFECTIVENESS), TESTS, SAFETY, VISUAL ACUITY, OPTICAL PROPERTIES, LIGHT, COLORS, DESIGN

Subject Categories : Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE