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Related Experiment Videos

The relationship between dissociated vertical divergence (DVD) and head tilts

R T Bechtel1, B J Kushner, G V Morton

  • 1Department of Ophthalmology and Visual Sciences, University of Wisconsin, Madison 53705-3631, USA.

Journal of Pediatric Ophthalmology and Strabismus
|November 1, 1996
PubMed
Summary
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Dissociated vertical divergence (DVD) often causes head tilts in patients. Most patients show a predictable response to head tilting, though atypical reactions can occur.

Area of Science:

  • Ophthalmology
  • Strabismus Research

Background:

  • Dissociated vertical divergence (DVD) is linked to manifest head tilts.
  • DVD typically increases with contralateral head tilt and decreases with ipsilateral tilt.

Purpose of the Study:

  • To investigate the association between dissociated vertical divergence (DVD) and manifest head tilts.
  • To analyze the response of DVD to forced head tilts.

Main Methods:

  • Examined 116 patients with DVD and infantile esotropia.
  • Assessed for manifest head tilt and analyzed DVD response to ipsilateral/contralateral head tilt.
  • Evaluated 100 patients with manifest head tilts to determine etiology.

Main Results:

  • 35% of patients with DVD and ocular fixation preference had a head tilt.

Related Experiment Videos

  • Most patients exhibited the classic DVD response to head tilt.
  • DVD was the cause of head tilt in 9% of patients with manifest head tilts.

    • Conclusions:

    • Dissociated vertical divergence frequently presents with a head tilt.
    • The typical response of DVD to head tilt is consistent.
    • DVD is a significant cause of manifest head tilts.