Characteristics of saccades during the near point of convergence test
| Autor: | Fernando Díaz-Doutón, Josselin Gautier, Clara Mestre, Harold E. Bedell, Jaume Pujol |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Centre de Desenvolupament de Sensors, Instrumentació i Sistemes, Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria, Universitat Politècnica de Catalunya. GREO - Grup de Recerca en Enginyeria Òptica |
| Rok vydání: | 2020 |
| Předmět: |
Vision Disparity
genetic structures Saccade-vergence interaction Vergence Ciències de la visió::Optometria::Visió binocular [Àrees temàtiques de la UPC] 050105 experimental psychology Ocular dominance 03 medical and health sciences 0302 clinical medicine Saccades Humans 0501 psychology and cognitive sciences Computer vision Mathematics Motivation Vision Binocular business.industry 05 social sciences Eye movement Convergence Ocular Visió binocular Sensory Systems Saccadic masking Ophthalmology Fixation (visual) Saccade Binocular disparity Artificial intelligence Near point of convergence Binocular vision business 030217 neurology & neurosurgery |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| ISSN: | 1878-5646 |
| Popis: | The near point of convergence test is widely used to evaluate binocular vision. It assesses the ability of the eyes to converge at short distances. Although the test consists of a pure symmetrical vergence task, small involuntary saccades occur concurrently. The main goal of this study was to analyze saccadic characteristics as a function of vergence demand when testing the near point of convergence. To this purpose, the eye movements of 11 participants were registered with an eye-tracker while they performed the near point of convergence test by following a target that traveled forward and backward on a motorized bench. Saccade amplitude increased and, on average, saccade rate decreased with vergence demand. In general, the direction of the concurrent vergence movement had no significant effect on saccade characteristics. However, each individual subject showed idiosyncratic behavior. Most saccades tended to be corrective in terms of both binocular disparity and individual fixation position errors. In particular, most participants tended to correct the fixation position error of the dominant eye. |
| Databáze: | OpenAIRE |
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