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The prism dissociation test in detecting unilateral functional visual loss.

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Title Journal of Neuro-Ophthalmology, June 1990, Volume 10, Issue 2
Date 1990-06
Language eng
Format application/pdf
Type Text
Publication Type Journal Article
Collection Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu
Publisher Lippincott, Williams & Wilkins
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah, 10 N 1900 E SLC, UT 84112-5890
Rights Management © North American Neuro-Ophthalmology Society
ARK ark:/87278/s6wm4kgm
Setname ehsl_novel_jno
ID 226196
Reference URL https://collections.lib.utah.edu/ark:/87278/s6wm4kgm

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Title The prism dissociation test in detecting unilateral functional visual loss.
Creator M. L. Slavin
Affiliation Department of Ophthalmology, Long Island Jewish Medical Center, New Hyde Park, NY 11042.
Abstract The prism dissociation test is useful in quantifying visual acuity in an eye with functional unilateral visual loss, whether severe or mild in degree. A small vertical prism is used to induce diplopia of a 20/20 or larger size projected Snellen letter, and the patient is asked to comment on the quality of each image seen. The acknowledgement of diplopia and comments on the clarity of the dissociated images serve as testimony to the actual level of visual acuity in each eye. In one case, a patient feigned 20/50 visual acuity in one eye after trauma. The prism dissociation test confirmed visual acuity of 20/20 in that eye, as well as excluding an abnormality of contrast sensitivity. In another case, an amblyopic eye previously noted to have 20/30 visual acuity, which allegedly had acute severe visual loss, was documented to have 20/30 visual acuity by the prism dissociation test.
Subject Diplopia; Female; Humans; Male; Malingering; Middle Older people; Vision Disorders; Vision Tests; Visual Acuity
OCR Text Show
Format application/pdf
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah, 10 N 1900 E SLC, UT 84112-5890
Setname ehsl_novel_jno
ID 226180
Reference URL https://collections.lib.utah.edu/ark:/87278/s6wm4kgm/226180