Hemianopsia/Hemianopia
Helpful therapy techniques
-developing scanning eye movements -visual field expander lenses
Mistaken patient reports
-may say the loss of vision is only in one eye -may deny the full degree of their problems
Hemianopia/hemianopsia
blindness in one half of a visual field
Non-corresponding field deficits
heteronymous hemianopia (also directly described - bitemporal or nasal)
Homonymous hemianopsia
loss of half of the field of view on the same side in both eyes
How does homonymous hemianopsia affect the patient?
loss of independence, fear of falling/running into things, feeling overwhelmed and unsafe in crowds
Damage to the right posterior brain can cause...
loss of the left field of view in both eyes
Damage to the left posterior brain can cause...
loss of the right field of view in both eyes
When does homonymous hemianopia frequently occur?
stroke, TBI, tumor -due to crossover of optic nerve fibers as they pass to the back of the brain