Accession Number : ADP006108

Title :   Relation between VEP and Visual Function in Lesions of the Optic Nerve and Visual Pathway,

Corporate Author : DALHOUSIE UNIV HALIFAX (NOVA SCOTIA)

Personal Author(s) : Regan, D. ; Neima, D.

Report Date : FEB 1988

Pagination or Media Count : 8

Abstract : In everyday life, perhaps the most important aspect of vision is the ability to see and recognize objects. This ability is commonly assessed by procedures such as the Snellen test in which the patient reads smaller and smaller letters. The smaller the letters that can be accurately recognized, the better the patient's spatial vision is conventionally assumed to be. This assumption seems to be intuitively obvious, so that a 20/20 Snellen score has become a household word for clear and acute vision. Recently, however, it has grown clear that some patients retain a normal ability to see small objects while their ability to see larger objects is degraded. The claims of such a patient that his vision was weak or ''washed out'' in an eye with 20/20 acuity might once have been difficult to attribute to organic pathology since the symptoms are quite different from those associated with refractive disorders of vision. (js)

Descriptors :   *OPTIC NERVE, EYE, LESIONS, PATHOLOGY, PATIENTS, REFRACTION, SIGNS AND SYMPTOMS, SPATIAL DISTRIBUTION, VISION, WORDS(LANGUAGE).

Subject Categories : Psychology
      Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE