||Biological aspects of laser radiation : a review of hazards.
||Bureau of Radiological Health, Rockville, Md.
|| Bureau of Radiological Health : [Available from U.S. Dept. of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.],
Radiation--Physiological effect. ;
( Lasers ;
Radiation tolerance ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Concern over the hazards of exposure to laser radiation has resulted in the establishment of guidelines for human exposure by several agencies. Owing to the incompleteness of knowledge concerning biological effects, particularly long-term ones, it is not possible to set firm protection standards at this time. Current guides are based upon the minimum dose required to produce a visible lesion. These threshold values may vary depending upon the criteria by which they are measured. For the eye, threshold damage has been determined by such varying means as ophthalmoscopy, light microscopic histology, histochemical study, and electroretinography. In histochemical studies, impairment of enzyme activity was apparent when the energy level of the light beam had been reduced by 10 to 15% below threshold for ophthalmoscopically visible or histologically detectable lesions. This raises the question of how damage in the human might be demonstrated below levels that are clinically apparent. (Author)
||At head of title: U.S. Dept. of Health, Education and Welfare. Public Health Service. Consumer Protection and Environmental Health Service. Environmental Control Administration." "P.B. 184 0003." Includes bibliographical references (pages 12-15). Microfiche.
|Corporate Au Added Ent
||United States. Public Health Service. Division of Radiological Health.
|PUB Date Free Form
||PC A02 MF A01
|OCLC Time Stamp
|OCLC Rec Leader
||01172nam 2200277Ka 45020