Identifier |
20150224_nanos_posters_128 |
Title |
Disconjugacy Of Eye Alignment Is Greater With Near Fixation During Binocular Viewing In Amblyopia |
Creator |
Vivian Xu; Robert Geary; Boris Gramatikov; David L. Guyton; Kristins Irsch; Howard S. Ying |
Affiliation |
(VX) Wilmer Eye Institute at The Johns Hopkins University, Baltimore, MD |
Subject |
Higher Visual Functions; Nystagmus; Ocular Motility; Pediatric Neuro-Ophthalmology; Higher Visual Cortical Functions |
Description |
Binocular eye movements were recorded at 500 Hz using the EyeLink 1000 eye tracker (SR Research Ltd., Ontario, Canada). Twenty subjects (nine normal and eleven amblyopic; age: 8-45 years) were asked to fixate on a blue cross subtending 0.5° at a near distance of 57 cm or at a far distance of 4 m for 20-second epochs of binocular or monocular viewing. Disconjugacy of eye alignment was estimated by the area of the 68% bivariate contour ellipse (BCEA) for the difference between right and left eye positions, by the percentage of fixation time within a 0.1°x 0.1° range, and microsaccade characteristics. Mean ± standard error of the mean were shown, log(BCEA) was used to normalize the distribution, and significance testing was performed with the Student's t-test. |
Date |
2015-02-24 |
Language |
eng |
Format |
application/pdf |
Type |
Text |
Source |
2015 North American Neuro-Ophthalmology Society Annual Meeting |
Collection |
Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu |
Publisher |
Spencer S. Eccles Health Sciences Library, University of Utah |
Holding Institution |
North American Neuro-Ophthalmology Association. NANOS Executive Office 5841 Cedar Lake Road, Suite 204, Minneapolis, MN 55416 |
ARK |
ark:/87278/s62r6zk6 |
Context URL |
The NANOS Annual Meeting Neuro-Ophthalmology Collection: https://novel.utah.edu/collection/NAM/toc/ |
Setname |
ehsl_novel_nam |
ID |
185013 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s62r6zk6 |