hemianopia
1
9.9
- noun
- /ˌhɛmɪəˈnoʊpiə/
- Specialized
:
hemianopía
- Mirrors and binocular sector prisms have been advocated by low vision practitioners for individuals with hemianopia, which is the loss of half the visual field in both eyes.
- hemianopia in the visual field
Examples
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PHOTO (BLACK & WHITE): Table 3: Patterns of abnormal visual field in 55 affected eyes. (BTH: bitemporal hemianopia, TFD: temporal field defect)
Academic text (2007) -
Field defects, whether they are due to retinal disease or even to hemianopia, do not affect visual acuity unless they also affect the fovea.
Academic text (2009) -
Yet, one cannot detect any boundary, except in cases of hemianopia.
Academic text (2009) -
Ten weeks after diagnosis we observe hemianopia... ...with transient horizontal nystagmus.
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Many states in the United States allow individuals with hemianopia to continue to drive upon completion of specific driving and vision evaluations (Peli, 2002).
Academic text (2008) -
Perceived visual phenomena include: scintillations, fortification spectra, zig-zag crescents, scotoma, hemianopia.
Academic text (2011) -
The patient must have a corrected visual acuity in his or her best eye of 20/70 or worse, or have a documented central scotoma, a general constriction of the visual fields, or bilateral hemianopia.
Academic text (2007) -
Visual field abnormality was detected in 55 eyes of 29 patients (44.4%), and bitemporal hemianopia was the striking abnormal VF in 19 patients (69%).
Academic text (2007) -
Cerebral visual impairments include sensory functions, such as visual acuity (amblyopia), field (hemianopia), and motion perception, as well as oculomotor functions, such as "fix and follow."
Academic text (2009) -
After her stroke, she was diagnosed with hemianopia, which made it difficult for her to see on the left side.
Synonyms
A loss of sight in one half of the field of vision of one or both eyes
A blind area that affects one side of the field of vision, often after brain damage
How Severe
70
3.1
- Specialized
1
9.9
- Specialized
1
9.9
- Specialized
1
4.8
Surface Forms
Morphology
hemianopia = anopia (semi-transparent) = hemi + anopia
Formally 'hemi-' (half) + 'anopia' (visual field loss) yields the literal meaning 'half blindness', but both elements are technical Greek medical forms unfamiliar to average learners.
Etymology
Hemianopia comes from Greek parts: hemi- meaning 'half', like in hemisphere, and -anopia meaning 'no sight' (you can see this idea in words like myopia). So, hemianopia is loss of vision in one half of what you can see.