Alternating hyperphoria. Dissociated vertical deviation (DVD) 'occlusion hyperphoria'

Alternating hyperphoria (synonyms: dissociated vertical deviation (DVD) or occlusion hyperphoria) and variants like 'unilateral patching hyperphoria' ('periodic vertical squint') and monocular vertical nystagmus, which may arise after strabismus operations or loss of the function...

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Bibliographic Details
Published in:Documenta ophthalmologica 1991-01, Vol.78 (3-4), p.135-140
Main Authors: Houtman, W A, Roze, J H, De Vries, B, Letsch, M C
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Convergence, Ocular - physiology
Humans
Strabismus - physiopathology
Vision Disparity - physiology
Vision Tests
Vision, Binocular
Citations: Items that this one cites
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Summary:Alternating hyperphoria (synonyms: dissociated vertical deviation (DVD) or occlusion hyperphoria) and variants like 'unilateral patching hyperphoria' ('periodic vertical squint') and monocular vertical nystagmus, which may arise after strabismus operations or loss of the function of one of the eyes, have dynamic properties which differ from those of the vertical vergences or fusional movements in normal binocular vision. Alternating hyperphoria is the result of an early intense disturbance of binocular vision, leading to the absence of vertical fusional vergence or the detection of disparity necessary for this. Vertical disparity vergence is essentially a stabilizing and adaptive system.
ISSN:0012-4486
1573-2622
DOI:10.1007/BF00165673