A covered eye fails to follow an object moving in depth

Abstract To clearly view approaching objects, the eyes rotate inward (vergence), and the intraocular lenses focus (accommodation). Current ocular control models assume both eyes are driven by unitary vergence and unitary accommodation commands that causally interact. The models typically describe di...

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Autores principales:	Arvind Chandna, Jeremy Badler, Devashish Singh, Scott Watamaniuk, Stephen Heinen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/57242b13819c4c32899770731db24ff0
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spelling	oai:doaj.org-article:57242b13819c4c32899770731db24ff02021-12-02T16:53:11ZA covered eye fails to follow an object moving in depth10.1038/s41598-021-90371-82045-2322https://doaj.org/article/57242b13819c4c32899770731db24ff02021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90371-8https://doaj.org/toc/2045-2322Abstract To clearly view approaching objects, the eyes rotate inward (vergence), and the intraocular lenses focus (accommodation). Current ocular control models assume both eyes are driven by unitary vergence and unitary accommodation commands that causally interact. The models typically describe discrete gaze shifts to non-accommodative targets performed under laboratory conditions. We probe these unitary signals using a physical stimulus moving in depth on the midline while recording vergence and accommodation simultaneously from both eyes in normal observers. Using monocular viewing, retinal disparity is removed, leaving only monocular cues for interpreting the object’s motion in depth. The viewing eye always followed the target’s motion. However, the occluded eye did not follow the target, and surprisingly, rotated out of phase with it. In contrast, accommodation in both eyes was synchronized with the target under monocular viewing. The results challenge existing unitary vergence command theories, and causal accommodation-vergence linkage.Arvind ChandnaJeremy BadlerDevashish SinghScott WatamaniukStephen HeinenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Arvind Chandna Jeremy Badler Devashish Singh Scott Watamaniuk Stephen Heinen A covered eye fails to follow an object moving in depth
description	Abstract To clearly view approaching objects, the eyes rotate inward (vergence), and the intraocular lenses focus (accommodation). Current ocular control models assume both eyes are driven by unitary vergence and unitary accommodation commands that causally interact. The models typically describe discrete gaze shifts to non-accommodative targets performed under laboratory conditions. We probe these unitary signals using a physical stimulus moving in depth on the midline while recording vergence and accommodation simultaneously from both eyes in normal observers. Using monocular viewing, retinal disparity is removed, leaving only monocular cues for interpreting the object’s motion in depth. The viewing eye always followed the target’s motion. However, the occluded eye did not follow the target, and surprisingly, rotated out of phase with it. In contrast, accommodation in both eyes was synchronized with the target under monocular viewing. The results challenge existing unitary vergence command theories, and causal accommodation-vergence linkage.
format	article
author	Arvind Chandna Jeremy Badler Devashish Singh Scott Watamaniuk Stephen Heinen
author_facet	Arvind Chandna Jeremy Badler Devashish Singh Scott Watamaniuk Stephen Heinen
author_sort	Arvind Chandna
title	A covered eye fails to follow an object moving in depth
title_short	A covered eye fails to follow an object moving in depth
title_full	A covered eye fails to follow an object moving in depth
title_fullStr	A covered eye fails to follow an object moving in depth
title_full_unstemmed	A covered eye fails to follow an object moving in depth
title_sort	covered eye fails to follow an object moving in depth
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/57242b13819c4c32899770731db24ff0
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A covered eye fails to follow an object moving in depth

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