Long Term Effects Retinal Laser Lesions: Multifocal ERGs (Electroretinogram) and Vernier Visual Evoked Potentials (VEPs)

Abstract

Seven Cynomolgus Fasciculata who had graded laser lesions placed in one eye only 6 years previously were evaluated by electro-physiological recording techniques. All animal recordings were performed under IACUC approved protocols. The single q-switched pulses from a neodymium-YAG laser produced lesions of 4 types at the time of placement: no visible change, minimal visible lesions, "white dot" lesions (localized circumscribed retinal blanching) and "red dot" lesions (contained retinal hemorrhage). Single exposures had been made both foveally and at 5 degrees eccentricity in the parafovea superiorly, inferiorly and temporally. The multifocal (perimetric) electiroretinogram was recorded from specialized contact lenses through hospital grade amplifiers.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1998
Accession Number
ADA341024

Entities

People

  • Elmar T. Schmeisser

Organizations

  • TASC, Inc

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Air Force
  • Amplifiers
  • Computers
  • Contrast
  • Electrodes
  • Electrophysiological Phenomena
  • Eye Diseases
  • Governments
  • Health Services
  • Information Science
  • Laser Safety
  • Lasers
  • Optical Properties
  • Retinal Diseases
  • Statistical Analysis
  • Steady State
  • United States

Readers

  • Vision Science/Vision Psychology/Cognitive Neuroscience.

Technology Areas

  • Directed Energy