Results 11 to 20 of about 6,513 (259)

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

Differentiation between vergence and saccadic functional activity within the human frontal eye fields and midbrain revealed through fMRI. [PDF]

open access: yesPLoS ONE, 2011
Eye movement research has traditionally studied solely saccade and/or vergence eye movements by isolating these systems within a laboratory setting. While the neural correlates of saccadic eye movements are established, few studies have quantified the ...
Yelda Alkan   +2 more
doaj   +1 more source

A role of eye vergence in covert attention. [PDF]

open access: yesPLoS ONE, 2013
Covert spatial attention produces biases in perceptual and neural responses in the absence of overt orienting movements. The neural mechanism that gives rise to these effects is poorly understood.
Maria Solé Puig   +3 more
doaj   +1 more source

A Pilot Study of Disparity Vergence and Near Dissociated Phoria in Convergence Insufficiency Patients Before versus After Vergence Therapy

open access: yesFrontiers in Human Neuroscience, 2015
PURPOSE: This study examined the relationship between the near dissociated phoria and disparity vergence eye movements. Convergence insufficiency (CI) patients before vergence therapy were compared to: 1) the same patients after vergence therapy and 2 ...
Tara L. Alvarez
doaj   +1 more source

Bidirectional Synergistic Vergence [PDF]

open access: yesNeuro-Ophthalmology, 2015
A 14-year-old boy presented with left ptosis and squint since his childhood. In primary position he had left hypotropia with ptosis (levator function 2 mm). With elevation of the right eye, the left eye depresses and adducts; with depression of the right eye, the left eye elevates and abducts. Forced duction test revealed no restrictive pattern.
Gokcen, Gokce   +5 more
openaire   +2 more sources

Differential diagnosis of vergence and saccade disorders in dyslexia

open access: yesScientific Reports, 2020
Previous studies suggest vergence and saccade abnormalities in dyslexic adolescents. However, these studies are mainly clinically based and do not provide objective measurements of eye movements, but rather subjectively evaluate vergence using haplosopic
Lindsey M. Ward, Zoï Kapoula
doaj   +1 more source

Error Correction in Vergence Eye Movements: Evidence Supporting Hering’s Law

open access: yesJournal of Eye Movement Research, 2012
In pure symmetrical vergence eye movements, a fusion initiating component quickly brings the eyes close to the desired position. A small error usually remains after this response which must be corrected to attain the small final vergence error (i.e ...
John L. Semmlow   +2 more
doaj   +1 more source

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