Application Of Cathode-Ray Tube Technology To The Clinical Evaluation Of Visual Functions

Cathode-ray tubes (CRTs) have many applications in the clinical evaluation of visual functions. They have been used to test visual acuity, contrast sensitivity, visual fields, and early development of vision in preverbal children. Because CRTs provide considerable flexibility for the definition of s...

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Bibliographic Details
Published in:Optical Engineering 1988-02, Vol.27 (2), p.272123-272123
Main Authors: Vernier, Francoise, Charlier, Jacques, Nguyen, Duc D
Format: Article
Language:English
Subjects:
Biological and medical sciences
Investigative techniques of ocular function and vision
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
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Summary:Cathode-ray tubes (CRTs) have many applications in the clinical evaluation of visual functions. They have been used to test visual acuity, contrast sensitivity, visual fields, and early development of vision in preverbal children. Because CRTs provide considerable flexibility for the definition of spatial and temporal components of the stimulus, their use provides an attractive solution to many visual stimulation problems. However, there are some limitations due to the scanning of the picture frame by the electron beam and also to the electron-photon conversion process. The spatial, photometric, spectral, and temporal characteristics of a specifically designed monochromatic television system are evaluated with reference to the physiological requirements of visual tests.
ISSN:0091-3286
1560-2303
DOI:10.1117/12.7976656