Journal article
Disparity vergence responses before versus after repetitive vergence therapy in binocularly normal controls
Journal of vision (Charlottesville, Va.), v 16(1), pp 1-19
01 Jan 2016
PMID: 26762276
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This study sought to determine whether significant changes would be observed between vergence eye movements before and after 12 hr of repetitive vergence therapy (1 hr per day on different days) in subjects with normal binocular vision compared to controls. Disparity vergence responses from 23 subjects were studied. An assessment protocol that minimized the influence of the near dissociated phoria on the disparity vergence system was designed. The following parameters were quantified for the responses: latency, time to peak velocity, settling time, peak velocity, and accuracy (difference between the response and stimulus amplitudes). The following outcomes were observed when comparing the results after vergence therapy to the baseline measurements: (a) near point of convergence and near dissociated phoria did not significantly change (p > 0.15); (b) latency, time to peak velocity, and settling time significantly decreased (p <= 0.01); and (c) accuracy significantly improved (p < 0.01). Results support that vergence peak velocity is dependent on the subject's near dissociated phoria. The accuracy and temporal properties of vergence eye movement responses from subjects with normal binocular vision can be improved after vergence therapy. These methods can be utilized within future studies to quantitatively assess vergence therapy techniques for patients with binocular dysfunction.
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Details
- Title
- Disparity vergence responses before versus after repetitive vergence therapy in binocularly normal controls
- Creators
- Henry Talasan - New Jersey Institute of TechnologyMitchell Scheiman - Salus UniversityXiaobo Li - New Jersey Institute of TechnologyTara L. Alvarez - New Jersey Institute of Technology
- Publication Details
- Journal of vision (Charlottesville, Va.), v 16(1), pp 1-19
- Publisher
- Assoc Research Vision Ophthalmology Inc
- Number of pages
- 19
- Grant note
- 1R01EY023261 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA 1228254; 1428425 / NSF MRI CBET R01EY023261 / NATIONAL EYE INSTITUTE; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Eye Institute (NEI)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Pennsylvania College of Optometry (PCO)
- Web of Science ID
- WOS:000374174300007
- Scopus ID
- 2-s2.0-84958155486
- Other Identifier
- 991021900612004721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Ophthalmology