gpsbrar
Forum Elite
Topics: 34
Posts: 278
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Central scotoma - macula
Ipsilateral blindness - optic nerve
Bitemporal hemianopia - optic chiasm
Homonymous hemianopia - optic tract
Upper homonymous quadrantanopia - temporal optic radiations
Lower homonymous quadrantanopia - parietal optic radiations
Cortical lesions produce defects similar to those of the optic radiations, but may spare the macula
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| kingsofke
Forum Guru
Topics: 24
Posts: 715
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just some add ons:
bitemporal homonymous inferior quandrantanopsia ---- ant communicating art aneurysm
central scotomas--- Multiple sclerosis
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| Dragonfly
Forum Elite
Topics: 25
Posts: 333
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Cortical lesions spare the MACULA if the lesion is BLOOD SUPPLY (b/c of good collaterals) but if it`s say trauma, then Macula could also be damages.
Also check the "Light reflex" in all cases, if affected, lesion is PRE-LGB if not it is POST-LGB which could include the cortex. but ofcourse there could be Partial PRE-LGBs lesions that spare the III n.
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| nimta49
Forum Junior
Topics: 14
Posts: 27
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occlusion of post cerebral cause homonymous hemianopia of contralat visual field with macular sparing
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