Abstract
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 language | English (US) |
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Pages (from-to) | 1216-1222 |
Number of pages | 7 |
Journal | Archives of ophthalmology |
Volume | 117 |
Issue number | 9 |
DOIs | |
State | Published - Sep 1999 |
ASJC Scopus subject areas
- Ophthalmology