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[Visual field defects in strabismic amblyopes].

R Sireteanu1, M Fronius

  • 1Max-Planck-Institut für Hirnforschung, Frankfurt am Main.

Klinische Monatsblatter Fur Augenheilkunde
|April 1, 1989
PubMed
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This study investigated visual field deficits in humans with strabismus and amblyopia. Results indicate that peripheral nasal field loss is uncommon in adult strabismic individuals, contradicting previous findings.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Visual Science

Background:

  • Early visual experience abnormalities in kittens can lead to nasal visual field deficits.
  • It remains unclear if these deficits represent sensory loss or sensorimotor impairment.

Purpose of the Study:

  • To investigate monocular visual field characteristics in humans with subnormal binocular vision.
  • To differentiate between sensory loss and sensorimotor impairment in visual field deficits.

Main Methods:

  • Tested monocular visual fields of strabismic and anisometropic amblyopes using computerized static perimetry (Octopus 2000).
  • Utilized static and kinetic perimetry (Goldmann 940) on additional subjects.
  • Assessed saccadic latency and visually guided pointing accuracy for nasal and temporal stimuli.

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Main Results:

  • Strabismic and anisometropic amblyopes showed occasional central visual sensitivity deficits, but no systematic peripheral deficits.
  • Strabismic alternators exhibited similar visual fields in both eyes.
  • No asymmetries in saccadic latency or pointing accuracy were found between nasal and temporal fields.

Conclusions:

  • Findings suggest peripheral nasal field loss is not a rule in adult strabismic humans.
  • Results challenge previous reports of nasal hemianopia in deep amblyopia.