Results 161 to 170 of about 10,330 (198)
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Documenta Ophthalmologica, 1981
In a preliminary report (Houtman et al., 1977) some of the characteristics of vertical vergence movements were mentioned. One of the most striking features appeared to be their slowness, compared to the horizontal disjunctive eye movements. This is a report of further studies on the dynamic characteristics of the vertical disjunctive eye movements ...
Houtman, W.A., Roze, J.H., Scheper, W.
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In a preliminary report (Houtman et al., 1977) some of the characteristics of vertical vergence movements were mentioned. One of the most striking features appeared to be their slowness, compared to the horizontal disjunctive eye movements. This is a report of further studies on the dynamic characteristics of the vertical disjunctive eye movements ...
Houtman, W.A., Roze, J.H., Scheper, W.
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Optometry and Vision Science, 1991
ABSTRACT A number of previous investigations have suggested that the relative contribution of proximal vergence to the overall vergence response may increase with age. Accordingly the present study has examined the proximal convergence/test distance (PC/T) ratio in a clinical population of 106 subjects ranging from 6 to 47 years of ...
S C, Hokoda +2 more
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ABSTRACT A number of previous investigations have suggested that the relative contribution of proximal vergence to the overall vergence response may increase with age. Accordingly the present study has examined the proximal convergence/test distance (PC/T) ratio in a clinical population of 106 subjects ranging from 6 to 47 years of ...
S C, Hokoda +2 more
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Vergence Adaptation and Senescence
Optometry and Vision Science, 1994ABSTRACT Purpose. The characteristics of prism adaptation have been evaluated by many previous studies but most have been performed on young subjects (typically 18 to 35 years of age). Because little information is available regarding the effect of age on vergence adaptation, we assessed prism ...
B, Winn +3 more
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Vergence Adaptation in Esotropia
Optometry and Vision Science, 1992ABSTRACT Vergence adaptation and anomalous fusional movements have been used by strabismics to overcome prism. There has been controversy in the literature regarding the nature of the vergence responses by esotropes to prism, i.e., fusional, avoidance of fusion, and/or anomalous fusion.
P E, Carniglia, J, Cooper
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Why Do Patients with Impaired Vergence Not Show “Saccadic” Vergence?
Annals of the New York Academy of Sciences, 2009Low gain of the smooth‐pursuit system causes correcting saccades that are clinically observed as “saccadic pursuit.” In contrast, low gain of the vergence system during tracking does not appear to cause “saccadic tracking.” To further evaluate whether this clinical observation is caused by a missing interaction of vergence to step and ramp targets ...
Holger, Rambold +3 more
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AN INVESTIGATION OF VOLUNTARY VERGENCE
American journal of optometry and archives of American Academy of Optometry, 1971Vergence rotation of the eyes around the vertical axes can be produced by a conscious willed effort. Investigation of this vergence component indicates that voluntary vergence is produced through the stimulation of accommodative vergence.
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The Electromyography of Vergence Movement
Archives of Ophthalmology, 1959In a previous report 1 a difference was described between the electromyographic pattern of version and convergence movement. The version, or saccadic, movement was shown to be associated with a sudden short discharge of larger motor units immediately followed by a regular pattern of lower amplitude. Corrective secondary bursts are often introduced upon
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A.M.A. Archives of Ophthalmology, 1958
Of the many factors which influence vergence movements (tonicity of the extraocular muscles, distance of the fixated object, 1 concave lenses and accommodation, 2 prisms, 3 and disparity, 4 among others) target size has perhaps been given the least experimental attention. In an important analysis of this problem Ittelson and Ames found that an increase
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Of the many factors which influence vergence movements (tonicity of the extraocular muscles, distance of the fixated object, 1 concave lenses and accommodation, 2 prisms, 3 and disparity, 4 among others) target size has perhaps been given the least experimental attention. In an important analysis of this problem Ittelson and Ames found that an increase
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Documenta Ophthalmologica, 1986
The present review aims to discuss the current researches on the ability of the vergence system to adjust to new information. A concomitant or non-concomitant binocular retinal disparity caused by a prism or an anisometropic prescription can be adapted to such that the induced phoria of fixation disparity reduces back to the original value.
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The present review aims to discuss the current researches on the ability of the vergence system to adjust to new information. A concomitant or non-concomitant binocular retinal disparity caused by a prism or an anisometropic prescription can be adapted to such that the induced phoria of fixation disparity reduces back to the original value.
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2003
Vergence eye movements refer to the binocular, nonconjugate, disjunctive ('fusional') movement of the eyes used to track objects moving in depth to maintain bifoveation and fused/single vision. They can be horizontal, vertical, and/or cyclorotary in nature.
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Vergence eye movements refer to the binocular, nonconjugate, disjunctive ('fusional') movement of the eyes used to track objects moving in depth to maintain bifoveation and fused/single vision. They can be horizontal, vertical, and/or cyclorotary in nature.
openaire +1 more source