Visual Fields

  • Assessment of peripheral achromatic vision
  • Complements testing of visual acuity, which measures central (foveal) vision
  • Amsler grid testing useful in detecting lesions near fixation
  • Confrontation visual field testing useful in detecting homonymous hemianopia, bitemporal hemianopia, altitudinal field defects. See patterns of visual field loss.
  • Bowl perimetry with static stimuli most sensitive visual field test, but depends on patient attention
  • Bowl perimetry with kinetic stimuli useful when bowl perimetry with static stimuli fails
  • Bowl perimetry used to detect, localize, follow course of visual pathway lesions, but...
  • Responses are SUBJECTIVE, therefore dependent on patient cooperation
  • Objective tests of visual fields are under study but not yet clinically practical