Visual pathway deficits

Visual pathway deficits are determined by the location of the lesion or pathology. Understanding of the visual system is paramount and provided the globe is normal, the field defects can be defined from anterior to posterior as:

  • unilateral central scotoma
  • bitemporal hemianopsia
  • junctional defect (ipsilateral central scotoma and a contralateral superior temporal field cut)
  • central temporal scotomas
  • incongruous homonymous hemianopsia, afferent pupillary defect, and bow-tie atrophy
  • homonymous sectoranopia
  • incongruous homonymous hemianopsia
    • lateral geniculate nucleus
  • homonymous upper quadrant defect "pie in the sky"
  • homonymous defect, denser inferiorly
  • Gerstmann syndrome and a homonymous defect, denser inferiorly
    • parietal lobe
  • complete homonymous hemianopsia
    • not well-localized
  • homonymous upper quadrantanopsia with macular sparing
  • homonymous lower quadrantanopsia with macular sparing
    • occipital lobe (upper bank)
  • isolated homonymous defect (macular sparing) without other neurologic findings
    • occipital lobe
  • Anton syndrome (cortical blindness)
    • bilateral occipital lobe lesions
  • Balint syndrome
    • bilateral occipitoparietal lesions
  • alexia without agraphia
  • central achromatopsia
    • bilateral occipitotemporal lesions
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Article information

rID: 4358
Synonyms or Alternate Spellings:
  • Visual pathway deficit

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Cases and figures

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    Fig 1: optic pathways
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    Passage of the op...
    Fig 2 : anatomy of eye and extraocular muscles
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    Locations of the ...
    Figure 3: visual pathway
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