Accession Number : ADA117810

Title :   Bioeffects Data Concerning the Safe Use of GaAs Laser Training Devices.

Descriptive Note : Conference proceedings,

Corporate Author : DEPUTY CHIEF OF STAFF FOR RESEARCH DEVELOPMENT AND ACQUISITION (ARMY) WASHINGTON D C

Personal Author(s) : Lund,David J ; Beatrice,Edwin S ; Schuschereba,Steven T

PDF Url : ADA117810

Report Date : 18 Jun 1982

Pagination or Media Count : 14

Abstract : The incident energy dose for single Q-switched exposure was determined for six laser wavelengths obtained from the dye laser. The solvent for all the laser dyes was DMSO. The laser linewidth at 912 nm, was 0.4 nm. For the other wavelengths the laser linewidth was less than 0.08 nm, the resolution limit of the monochrometer used for wavelength measurements. The laser beam was nearly gaussian in profile. The beam divergence was measured at the diameter where the intensity fell to 1/e times the peak value. Retinal tissue from two eyes exposd to 900 nm radiation was processed and sectioned for light microscopy. It is shown that, although the damage to the retinal pigment epithelium is slight, the photoreceptors at the exposure site have been damaged throughout their length. A lesion is near the edge of the macula where both rods and cones are found. The RPE is more extensively damaged in this lesion, and again the photoreceptors are damaged throughout their length.

Descriptors :   *Radiation effects, *Lasers, *Laser radiobiology, *Training devices, *Dye lasers, Laser safety, Histology, Retina, Rhesus monkeys, Laser damage, Radiation damage, Q switching

Subject Categories : Radiobiology
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE