PubMed · 4020011
A case in point extended.
Abstract
No visual examination can be considered complete without visual field investigation. Garmizo suggests at least a hand confrontation, and Goodlaw urges a refinement of this procedure using a wand with a 3" by 3" background to a 3mm target. There is also a question of body clues to hand location when the hand is the target. This suggested procedure circumvents this by using a 6" to 8" long handle on the target.
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E Goodlaw. 1985. A case in point extended.. https://pubmed.ncbi.nlm.nih.gov/4020011/
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