Alternating hyperphoria: Dissociated vertical deviation (DVD) ‘occlusion hyperphoria’

W.A. Houtman*, J.H. Roze, B. de Vries, M.C. Letsch

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    4 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)135-140
    Number of pages6
    JournalDocumenta ophthalmologica
    Volume78
    Issue number3-4
    DOIs
    Publication statusPublished - 1991
    Event185TH MEETING OF THE NETHERLANDS OPHTHALMOLOGICAL SOC - , Netherlands
    Duration: 20-Mar-199122-Mar-1991

    Keywords

    • ALTERNATING HYPERPHORIA
    • DISSOCIATED VERTICAL DEVIATION
    • VERTICAL DISPARITY VERGENCE
    • CONGENITAL SQUINT

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