
1) Hemianopia 2) Vision defect 3) Visual defect 4) Visual disorder 5) Visual impairment
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https://www.crosswordclues.com/clue/hemianopsia

1) Hemianopia
Found on
https://www.crosswordclues.com/clue/hemianopsia

Hemianopia, or hemianopsia, is a decreased vision or blindness (anopsia) in half the visual field of one or both eyes, usually on one side of the vertical midline. The most common causes of this damage are stroke, brain tumor, and trauma. == Etymology == The word Hemianopsia is from Greek origins, where: == Types of hemianopsia == When the patholo...
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http://en.wikipedia.org/wiki/Hemianopsia

blindness in one eye
Found on
http://phrontistery.info/h.html

<neurology, ophthalmology> Blindness for half the field of vision in one or both eyes. ... Origin: Gr. Opsis = vision ... (09 Mar 1998) ...
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http://www.encyclo.co.uk/local/20973

(hem″e-ә-nop´se-ә) hemianopia.
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http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: hem′ē-an-op′sē-ă Synonyms: hemianopia
Found on
http://www.medilexicon.com/medicaldictionary.php?t=39910

Greek hemi = half, an = negative, opsis = vision, hence loss of half of the field of vision.
Found on
https://www.encyclo.co.uk/local/21450
No exact match found.