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Assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy

Fixational eye movements are a hallmark of human gaze behavior, yet little is known about how they interact between fellow eyes. Here, we designed, built and validated a split-field binocular scanning laser ophthalmoscope to record high-resolution eye motion traces from both eyes of six observers du...

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Autores principales: Hofmann, Julia, Domdei, Lennart, Jainta, Stephanie, Harmening, Wolf M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Association for Research in Vision and Ophthalmology 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9465939/
https://www.ncbi.nlm.nih.gov/pubmed/36069941
http://dx.doi.org/10.1167/jov.22.10.5
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author Hofmann, Julia
Domdei, Lennart
Jainta, Stephanie
Harmening, Wolf M.
author_facet Hofmann, Julia
Domdei, Lennart
Jainta, Stephanie
Harmening, Wolf M.
author_sort Hofmann, Julia
collection PubMed
description Fixational eye movements are a hallmark of human gaze behavior, yet little is known about how they interact between fellow eyes. Here, we designed, built and validated a split-field binocular scanning laser ophthalmoscope to record high-resolution eye motion traces from both eyes of six observers during fixation in different binocular vergence conditions. In addition to microsaccades and drift, torsional eye motion could be extracted, with a spatial measurement error of less than 1 arcmin. Microsaccades were strongly coupled between fellow eyes under all conditions. No monocular microsaccade occurred and no significant delay between microsaccade onsets across fellow eyes could be detected. Cyclotorsion was also firmly coupled between both eyes, occurring typically in conjugacy, with gradual changes during drift and abrupt changes during saccades.
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spelling pubmed-94659392022-09-13 Assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy Hofmann, Julia Domdei, Lennart Jainta, Stephanie Harmening, Wolf M. J Vis Methods Fixational eye movements are a hallmark of human gaze behavior, yet little is known about how they interact between fellow eyes. Here, we designed, built and validated a split-field binocular scanning laser ophthalmoscope to record high-resolution eye motion traces from both eyes of six observers during fixation in different binocular vergence conditions. In addition to microsaccades and drift, torsional eye motion could be extracted, with a spatial measurement error of less than 1 arcmin. Microsaccades were strongly coupled between fellow eyes under all conditions. No monocular microsaccade occurred and no significant delay between microsaccade onsets across fellow eyes could be detected. Cyclotorsion was also firmly coupled between both eyes, occurring typically in conjugacy, with gradual changes during drift and abrupt changes during saccades. The Association for Research in Vision and Ophthalmology 2022-09-07 /pmc/articles/PMC9465939/ /pubmed/36069941 http://dx.doi.org/10.1167/jov.22.10.5 Text en Copyright 2022 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
spellingShingle Methods
Hofmann, Julia
Domdei, Lennart
Jainta, Stephanie
Harmening, Wolf M.
Assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy
title Assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy
title_full Assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy
title_fullStr Assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy
title_full_unstemmed Assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy
title_short Assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy
title_sort assessment of binocular fixational eye movements including cyclotorsion with split-field binocular scanning laser ophthalmoscopy
topic Methods
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9465939/
https://www.ncbi.nlm.nih.gov/pubmed/36069941
http://dx.doi.org/10.1167/jov.22.10.5
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