Potential ocular hazards from solar exposure during extravehicular activity

James K. Franks; David H. Sliney; Rodney Wood Jr.

doi:10.1117/12.275234

2 May 1997 Potential ocular hazards from solar exposure during extravehicular activity

James K. Franks, David H. Sliney, Rodney Wood Jr.

Proceedings Volume 2974, Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment; (1997) https://doi.org/10.1117/12.275234
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

In earth orbit, the ambient optical radiation environment provided by the sun is not the same as on the surface of the earth. The atmosphere provides a protective layer that is not present in space. The American Conference of Governmental Industrial Hygienists (ACGIH) has published guidelines for exposure to broad-band optical radiation. These guidelines are called threshold limit values (TLV). Potential hazards include photochemical and thermal effects on the eye and skin. These guidelines are intended to be used with artificial sources such as arc lamps, however, they may be applied to solar exposure during extravehicular activity so that recommendations may be made to limit the risk of astronauts who are spending more and more time outside the space shuttle. Protective filters are discussed that will limit exposure to optical radiation. Permissible exposure times are calculated based on the ACGIH TLVs. Although thermal TLVs may be exceeded, exposures are well below injury thresholds.

Citation Download Citation

James K. Franks, David H. Sliney, and Rodney Wood Jr. "Potential ocular hazards from solar exposure during extravehicular activity", Proc. SPIE 2974, Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment, (2 May 1997); https://doi.org/10.1117/12.275234

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