Determination of ocular threshold levels for infrared radiation cataractogenesis

Pitts, Donald G.; Gullen, Anthony P.; Dayhaw-Barker, Pierette

doi:10.26616/NIOSHPUB80121

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i

Determination of ocular threshold levels for infrared radiation cataractogenesis

June 1980
By Pitts, Donald G. ; Gullen, Anthony P. ; Dayhaw-Barker, Pierette
Series: NIOSH Numbered Publications

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English

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Details:

Personal Author:

Pitts, Donald G. ; Gullen, Anthony P. ; Dayhaw-Barker, Pierette

Pitts, Donald G. ; Gullen, Anthony P. ; Dayhaw-Barker, Pierette Less -
Corporate Authors:

University of Houston. College of Optometry. ; National Institute for Occupational Safety and Health. Division of Biomedical and Behavioral Sciences.

University of Houston. College of Optometry. ; National Institute for Occupational Safety and Health. Division of Biomedical and Behavioral Sciences. Less -
Description:

"The effects of infrared radiation on rabbit and monkey eyes were tested to establish the ocular threshold exposure values for radiation in the 700 to 1400 nanometers (nm) wavelength range necessary to produce cateracts in the crystalline lenses. A 5000 watt lamp was used as the source for the infrared energy. Corneal, iris and lenticular lesions resulted from irradiation. Corneal damage varied from epithelial haze to erosion and healed within 24 hours. The iris showed stromal haze and swelling in the exposure region with severe damage. Lenticular 0pacities appeared as small white dots at the level of the anterior epithelium beneath the anterior capsule. The radiant exposure threshold decreased as the irradiance level increased. In rabbits irradiance exceeding 4.0 watts per square centimeter (W/sq cm) resulted in threshold radiant exposure of 1250 joules per square centimeter (J/sq cm) for the corneas, 1250 J/sq cm for the iris and 2250 J/sq cm for the lens. In the primate, irradiance above 4.0W/sq cm resulted in radiant exposure thresholds of 8000 J/sq cm for the cornea and iris and 10,000 J/sq cm for the lens. The authors recommend reflective metallic coatings to control occular exposure to infrared radiation." - NIOSHTIC-2

NIOSHTIC no. 00103463

80-121.pdf?id=10.26616/NIOSHPUB80121
Subjects:

[+]

Employment Evaluation Studies As Topic Muscular Diseases/prevention & Control Occupational Diseases/prevention & Control Personnel Selection Physical Examination Physical Exertion
Series:

NIOSH Numbered Publications
DOI:

https://doi.org/10.26616/NIOSHPUB80121
Document Type:

Report
Funding:

77-0042-7701
Pages in Document:

v, 55 numbered pages
NIOSHTIC Number:

00103463
Resource Number:

DHHS (NIOSH) Publication No. 80-121
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

[+]

urn:sha-512:5c704a27d4d360315bb50475f4dbd4e6577814faa8c697a007fdc5f865ee9c325b2968b654ce6d585f6ddd285a484c4008fec3330f67426d272da58e03541822
Download URL:

https://stacks.cdc.gov/view/cdc/116140/cdc_116140_DS1.pdf
File Type:

[PDF-17.61 MB]