Potential ocular hazards from solar exposure during extravehicular activity

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages130-138
Number of pages9
Volume2974
DOIs
StatePublished - 1997
Externally publishedYes
EventLaser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment - San Jose, CA, United States
Duration: Feb 10 1997Feb 10 1997

Other

OtherLaser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment
CountryUnited States
CitySan Jose, CA
Period2/10/972/10/97

Keywords

  • "blue-light"
  • Astronaut
  • Extraterrestrial solar spectrum
  • Solar exposure

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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