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

摘要

Seven Cynomolgus Fasciculata who had graded laser lesions placed in one eye only6 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.