Accession Number : AD0674960

Title :   WELDING FILTERS AND THERMAL DAMAGE TO THE RETINA,

Corporate Author : DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s) : Clark,Barry A. J.

Report Date : 1968

Pagination or Media Count : 8

Abstract : Recent experimental determinations by others of the minimum power density of optical radiation (energy intensity) necessary to cause thermal damage to the retina are reviewed. It is concluded that the previously adopted threshold intensity value for exposures of many minutes duration, 1.8 cal/sq cm/min (1.25 mJ/sq mm/sec) (Clark, 1967), is supported by part of the conflicting evidence reviewed. Since the remaining evidence indicates thresholds that are higher by a factor of ten or more it is desirable that the lowest threshold, i.e. that adopted, should continue to be used for safety reasons and therefore the infra-red transmission limits for welding fitters previously derived are supported. (Author)

Descriptors :   (*RETINA, BURNS(INJURIES)), WELDING, INFRARED FILTERS, THERMAL RADIATION, DENSITY, THRESHOLDS(PHYSIOLOGY), INFRARED RADIATION, EXPOSURE(PHYSIOLOGY), HAZARDS, AUSTRALIA

Subject Categories : Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE