Article Text

PDF
Depth perception deficits in glaucoma suspects
  1. N Gupta1,2,3,4,
  2. N Krishnadev1,2,
  3. S J Hamstra2,5,6,
  4. Y H Yücel2,3,4
  1. 1Glaucoma and Nerve Protection Unit, St Michael’s Hospital, Toronto, Canada
  2. 2Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Canada
  3. 3Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
  4. 4St Michael’s Hospital Research Institute, Toronto, Canada
  5. 5Department of Psychology, University of Toronto, Toronto, Canada
  6. 6Department of Surgery, University of Toronto, Toronto, Canada
  1. Correspondence to: Neeru Gupta MD, PhD, FRCSC, DABO, Glaucoma and Nerve Protection Unit, Department of Ophthalmology and Vision Sciences, University of Toronto, St Michael’s Hospital, 30 Bond Street, 8-072 Cardinal Carter Wing, Toronto, Ontario, Canada, M5B 1W8; guptan{at}smh.toronto.on.ca

Abstract

Aim: To investigate depth perception in glaucoma suspects compared to glaucoma patients and controls.

Methods: Glaucoma suspects (n = 16), patients (n = 18), and normal age matched controls (n = 19) aged 40–65 years were prospectively evaluated for depth perception deficits using the Frisby test. Stereoacuity was measured by stereothreshold in seconds of arc for each group.

Results: Glaucoma suspects showed significantly increased mean stereothreshold compared to age matched normals (144.1 (SE 35.2) v 26.6 (3.7) seconds of arc; p = 0.0004). The mean stereothreshold in glaucoma patients was also increased compared to age matched normals 148.1 (33.8) v 26.6 (3.7) seconds of arc; p = 0.0004).

Conclusions: Glaucoma suspects show depth perception deficits. The impaired stereovision in glaucoma suspects suggests that binocular interactions can be disrupted in the presence of normal visual fields by standard achromatic automated perimetry.

  • IOP, intraocular pressure
  • SE, standard error
  • glaucoma
  • visual dysfunction
  • visual cortex
  • binocular function
  • stereopsis
  • central visual pathways
  • IOP, intraocular pressure
  • SE, standard error
  • glaucoma
  • visual dysfunction
  • visual cortex
  • binocular function
  • stereopsis
  • central visual pathways

Statistics from Altmetric.com

Footnotes

    Request permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

    Linked Articles

    • BJO at a glance
      Creig Hoyt