Identifier |
wh_ch2_p87_1 |
Title |
Walsh & Hoyt: Pulfrich Phenomenon |
Creator |
Michael Wall, MD; Chris A. Johnson, MD |
Affiliation |
(MW) University of Iowa, Department of Neurology and Ophthalmology; (CAJ) Devers Eye Institute |
Subject |
Diagnostic Technique, Ophthalmological; Ophthalmologic Surgical Procedures; Ophthalmology; Ophthalmoscopy; Pulfrich Examination |
Description |
In 1922, Pulfrich reported that when a small target oscillating in a frontal plane is viewed binocularly with one eye covered with a filter to reduce light intensity, the target appears to move in an elliptic path, rather than a to-and-fro path. When the filter is placed over the right eye, the rotation appears counterclockwise; if it is placed over the left eye, the rotation appears clockwise. The explanation for this stereo phenomenon is that the covered eye is more weakly stimulated than the uncovered eye, resulting in a delay in the transmission of visual signals to the striate cortex. |
Date |
2005 |
Language |
eng |
Format |
application/pdf |
Type |
Text |
Source |
Walsh and Hoyt's Clinical Neuro-Ophthalmology, 6th Edition |
Relation is Part of |
Walsh and Hoyt's Clinical Neuro-Ophthalmology Walsh and Hoyt's Clinical Neuro-Ophthalmology |
Collection |
Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu |
Publisher |
Wolters Kluwer Health, Philadelphia |
Holding Institution |
Spencer S. Eccles Health Sciences Library, University of Utah, 10 N 1900 E SLC, UT 84112-5890 |
Rights Management |
Copyright 2005. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright |
ARK |
ark:/87278/s6wt22qv |
Setname |
ehsl_novel_whts |
ID |
186294 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6wt22qv |