Results 1 to 10 of about 6,755 (260)

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 Argiles Sans, Genis Cardona
exaly   +7 more sources

Oculomotor Vergence Eye Movement Endurance in Normal Vision via Virtual Reality-Integrated Eye Tracking [PDF]

open access: yesJournal of Eye Movement Research
Modern societies are becoming increasingly dependent on electronics, leading to an increase in visual symptoms. Vergence endurance, the ability to sustain performance, may serve as a quantitative metric to complement symptom surveys to assess vergence ...
Fatema F. Hirani   +2 more
doaj   +2 more sources

Vergence findings and horizontal vergence dysfunction among first year university students in Benin City, Nigeria

open access: yesJournal of Optometry, 2016
Purpose: The study was designed to determine the prevalence of vergence dysfunctions among first year university students in Nigeria and to document the measures that define the vergence system of the visual system.
Godwin Ovenseri-Ogbomo
exaly   +3 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

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

Accuracy of formulae for secondary intraocular lens power calculations in pediatric aphakia

open access: yesJournal of Current Ophthalmology, 2017
Purpose: To compare the accuracy of axial length vergence formulas versus refractive vergence formulas for secondary intraocular lens (IOL) implantation in pediatric aphakia. Methods: This retrospective comparative study, evaluated 31 eyes of 31 patients
Fouad R. Nakhli   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy