Dissociated vertical divergence: A righting reflex gone wrong

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66 Scopus citations


Dissociated vertical divergence (DVD) is an ocular motor disorder characterized by a slow, upward drift of 1 eye when the other eye is fixating a target. I propose that DVD is a dorsal light reflex in which asymmetrical visual input to the 2 eyes evokes a vertical divergence movement of the eyes. This primitive visuo-vestibular reflex functions as a righting response to restore vertical orientation in lower lateral-eyed animals by equalizing binocular visual input. The dorsal light reflex is suppressed in humans but can manifest as DVD when early-onset strabismus precludes normal binocular development.

Original languageEnglish (US)
Pages (from-to)1216-1222
Number of pages7
JournalArchives of ophthalmology
Issue number9
StatePublished - Sep 1999

ASJC Scopus subject areas

  • Ophthalmology


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