نتایج جستجو برای: fusional vergence amplitudes

تعداد نتایج: 30420  

Journal: :Archives of ophthalmology 1999
E W Cheeseman D L Guyton

OBJECTIVES To test the previous findings of Enright that disparity-induced vertical vergence is mediated primarily by the oblique muscles, and to relate this normal eye movement pattern to the eye movement pattern seen in subjects with dissociated vertical deviation. METHODS Sixteen normal volunteers underwent 55 measurements of the cycloversion associated with prism-induced vertical vergence...

Journal: :Vision Research 2015
Vidhyapriya Sreenivasan William R. Bobier

This research tested the hypothesis that the successful treatment of convergence insufficiency (CI) with vision-training (VT) procedures, leads to an increased capacity of vergence adaptation (VAdapt) allowing a more rapid downward adjustment of the convergence accommodation cross-link. Nine subjects with CI were recruited from a clinical population, based upon reduced fusional vergence amplitu...

Journal: :Vision Research 1995
Ronald S. Harwerth Earl L. Smith John Siderov

Investigations on macaque monkeys have provided much of our knowledge of the neural mechanisms of binocular vision, but there is little psychophysical data on the accuracy of vergence responses or the precision of stereoscopic depth perception in these primates. We have conducted comparative behavioral studies of binocular disparity processing in rhesus monkeys and humans via measurements of pr...

Journal: :British Journal of Ophthalmology 1986

2017
Jung Un Jang Jung Yun Jang Kim Tai-hyung Hwang Woon Moon

PURPOSE To determine the effectiveness of vision therapy among Korean elementary school children with convergence insufficiency. METHODS A total of 235 elementary schoolchildren, 10.13 ± 2.45 years of age, were subjected to thorough eye examination including binocular vision testing. Of them, 32 individuals with symptomatic convergence insufficiency without strabismus, amblyopia, and ocular d...

Journal: :Journal of Clinical & Experimental Ophthalmology 2017

Journal: :Vision Research 1997
RONALD S. HARWERTH EARL L. SMITH M.L.J. CRAWFORD G. K. von NOORDEN

The surgical treatment for strabismus in infants generally results in microtropia or subnormal binocular vision. Although the clinical characteristics of these conditions are well established, there are important questions about the mechanisms of binocular vision in these patients that can best be investigated in an appropriate animal model. In the present psychophysical investigations, spatial...

2017
Yuanyuan Chen Yuwen Wang Xinping Yu Aiqin Xu Jian Jiang Hao Chen

Objectives. This study aimed to compare changes in ocular status after 3D TV viewing under three modes of illumination and thereby identify optimal illumination for 3D TV viewing. Methods. The following measures of ocular status were assessed: the accommodative response, accommodative microfluctuation, accommodative facility, relative accommodation, gradient accommodative convergence/accommodat...

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