Ocular effects of pulsed neodymium laser radiation: variation of threshold with pulse width. Final report

Technical Report · Fri Nov 01 00:00:00 EST 1985

OSTI ID:5994128

Allen, R G; Thomas, S J; Harrison, R F; Zuclich, J A; Blankenstein, M F

This study of retinal damage thresholds in the rhesus monkey investigated the effects of Nd:YAG laser radiation at four pulsewidths: 4, 30, and 200 nansec, and 10 microsecs. The thresholds causing minimal, ophthalmoscopically visible lesions for the four pulsewidths were 158, 326, 170, and 425 micron j respectively, incident at the eye in single-pulse exposures. The data are interpreted to imply a flat trend for thresholds at pulsewidths examined. This agrees with the maximum permissible exposures set by current safety standards. This finding contrasts with the hypothesis of an anomalous trend of increasing threshold with decreasing pulsewidth suggested for pulsewidths ranging from nanosec-microsecs.

• Research Organization: Technology, Inc., San Antonio, TX (USA). Life Sciences Div.
• OSTI ID: 5994128
• Report Number(s): AD-A-163154/8/XAB
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
RETINA
BIOLOGICAL RADIATION EFFECTS
DAMAGE
NEODYMIUM LASERS
OPHTHALMOLOGY
SAFETY
STANDARDS
VARIATIONS
VISIBLE SPECTRA
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EYES
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HEAD
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ORGANS
RADIATION EFFECTS
SENSE ORGANS
SOLID STATE LASERS
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560400* - Other Environmental Pollutant Effects