Accession Number : AD0448763

Title :   HUMAN ELECTRORETINOGRAPHY AS A GAUGE OF VISUAL PERFORMANCE.

Descriptive Note : Annual progress rept. no. 2, 1 June 631 June 64,

Corporate Author : MIAMI UNIV CORAL GABLES FL SCHOOL OF MEDICINE

Personal Author(s) : Shipley, Thorne

Report Date : 15 JUL 1964

Pagination or Media Count : 8

Abstract : A new apparatus is described permitting the plotting of the change in the central scotoma as a function of time in the dark. A statistical analysis is presented of the ERG in 100 normal eyes. The question is raised concerning the possibility of false negative ERG responses. The Cordis portable apparatus was tested in the field, powered by a 12 volt car battery, and it was found to be entirely satisfactory. A small sample of rare night blind patients (three with entirely normal photopic acuity) has been obtained and extensively studied. Within that sample, a close correlation between adaptometric curves and the ERG was not found. Further intensive work is planned with these patients to explore ERG correlations with other definitions of night vision besides the adaptometric ones. A physiological computer (Neurac) has been in operation for about two months and first results are reported. (Author)

Descriptors :   *VISUAL ACUITY, *RETINA, MEASUREMENT, ELECTRONIC RECORDING SYSTEMS, STATISTICAL ANALYSIS, PATHOLOGY, PHOTOSENSITIVITY, ADAPTATION, NIGHT VISION, DISEASES, CORRELATION TECHNIQUES, THRESHOLDS(PHYSIOLOGY), CHILDREN, TEST EQUIPMENT, COMPUTERS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE