Results 21 to 30 of about 10,330 (198)

Stereopsis is perturbed by vergence error

open access: yesVision Research, 2003
Fixation disparity or vergence noise produce instantaneous vergence errors. These errors are analogous to the imposition of a pedestal disparity, which is known to elevate stereothresholds.
Harold E Bedell
exaly   +2 more sources

Saccade characteristics during fusional vergence tests as a function of vergence demand [PDF]

open access: yesProceedings of the 2024 Symposium on Eye Tracking Research and Applications
This study investigated saccadic behaviour during the fusional vergence test as a function of disparity vergence demand. Participants’ divergence and convergence fusional vergence ranges were measured in an haploscopic setup.
Mestre Ferrer, Clara   +3 more
core   +3 more sources

The Interaction between Vergence and Accommodation Cues in the Assessment of Fusional Vergence Range

open access: yesLife
Fusional vergence range tests are commonly used in optometric practice. The aim of this study was to investigate the possible contribution of CA/C, AC/A, and proximal cues (PCT) to the magnitude and presence of blur and recovery during the measurement of
Marc Argilés, Genis Cardona
doaj   +5 more sources

Vergence Formula for Estimating the Refractive Status of Aphakic Eyes in Pediatric Patients

open access: yesFrontiers in Medicine, 2022
Clinical RelevanceA vergence formula may provide a simple and reliable calculation of the refractive status of aphakic eyes.BackgroundMeasuring the refractive error of pediatric eyes with aphakia is difficult.
Linlu Tian   +6 more
doaj   +1 more source

Effects of virtual target size, position, and parallax on vergence-accommodation conflict as estimated by actual gaze

open access: yesScientific Reports, 2022
Due to the increased utilization of stereoscopic displays, the scope of the vergence–accommodation conflict has been studied extensively to reveal how the human visual system operates.
Chiuhsiang Joe Lin, Susmitha Canny
doaj   +1 more source

Large-scale cortico-cerebellar computations for horizontal and vertical vergence in humans

open access: yesScientific Reports, 2022
Horizontal and vertical vergence eye movements play a central role in binocular coordination. Neurophysiological studies suggest that cortical and subcortical regions in animals and humans are involved in horizontal vergence.
Hiroyuki Mitsudo   +3 more
doaj   +1 more source

Saccades and vergence performance in a population of children with vertigo and clinically assessed abnormal vergence capabilities. [PDF]

open access: yesPLoS ONE, 2011
PURPOSE: Early studies reported some abnormalities in saccade and vergence eye movements in children with vertigo and vergence deficiencies. The purpose of this study was to further examine saccade and vergence performance in a population of 44 children (
Maria Pia Bucci   +4 more
doaj   +1 more source

Gaze-dependent phoria and vergence adaptation. [PDF]

open access: yes, 2016
Incomitance is a condition with gaze-dependent deviations of ocular alignment and is common in strabismus patients. The physiological mechanisms that maintain equal horizontal ocular alignment in all gaze directions (concomitance) in healthy individuals ...
Abegg, Mathias, Dysli, Denise-Muriel
core   +3 more sources

Central crosstalk for somatic tinnitus: abnormal vergence eye movements. [PDF]

open access: yesPLoS ONE, 2010
BACKGROUND: Frequent oulomotricity problems with orthoptic testing were reported in patients with tinnitus. This study examines with objective recordings vergence eye movements in patients with somatic tinnitus patients with ability to modify their ...
Qing Yang   +5 more
doaj   +1 more source

Atypical cognitive vergence responses in children with attention deficit hyperactivity disorder but not with autism spectrum disorder in a facial emotion recognition task

open access: yesPsychiatry Research Communications, 2022
Background: Facial expression of emotion is fundamental to human social interactions. Attention to relevant cues in ADHD and ASD patients are believed to underlie difficulties in recognizing emotions. Cognitive vergence eye movements during gaze fixation
Patricia Bustos-Valenzuela   +6 more
doaj   +1 more source

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