title: Hypotropic dissociated vertical deviation; a case report.
abstract: OBJECTIVE
  To report the clinical features of a rare case of hypotropic dissociated vertical deviation (DVD).
  
  
  METHODS
  A 25-year-old female was referred with unilateral esotropia, hypotropia and slow variable downward drift in her left eye. She had history of esotropia since she had been 3-4 months of age. Best corrected visual acuity was 20/20 in her right eye and 20/40 in the left one when hyperopia was corrected. She underwent bimedial rectus muscle recession of 5.25mm for 45 prism diopters (PDs) of esotropia. She was orthophoric 3 months after surgery and no further operation was planned for correction of the hypotropic DVD.
  
  
  CONCLUSIONS
  This rare case of hypotropic DVD showed only mild amblyopia in her non-fixating eye. The etiology was most probably acquired considering hyperopia as a sign of early onset accommodative esotropia.
authors.affiliation: Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran ; Clinical Research and Development Center, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Zhale
authors.initials: Z
authors.lastname: Rajavi
authors.affiliation: Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Mohadasseh
authors.initials: M
authors.lastname: Feizi
authors.affiliation: Clinical Research and Development Center, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Narges
authors.initials: N
authors.lastname: Haftabadi
authors.affiliation: Clinical Research and Development Center, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Kourosh
authors.initials: K
authors.lastname: Sheibani
keywords: DVD; Dissociated Vertical Deviation