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Acuity perimetry: estimation of neural channels.

Journal article
Authors Lars Frisén
Published in International ophthalmology
Volume 12
Issue 3
Pages 169-74
ISSN 0165-5701
Publication year 1988
Published at Department medicine
Pages 169-74
Language en
Links www.ncbi.nlm.nih.gov/entrez/query.f...
Keywords Adolescent, Adult, Aged, Humans, Middle Aged, Retinal Ganglion Cells, cytology, Visual Acuity, Visual Field Tests, Visual Fields, Visual Pathways, physiology
Subject categories Ophthalmology, Neurology

Abstract

Measurements of peripheral visual acuity allow quantitative estimations of retino-cortical neural channels. Analysis of results from high-pass resolution perimetry revealed that about 2/3 of all channels are contained within 30 degrees of visual field eccentricity and that loss of 1/3 raises the average threshold level about 1 decibel. The analytical procedure can be applied to any type of visual field defect.

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