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visual acuity definition | Concept | Medical Knowledge Base

Knowledge Base/Concept/visual acuity definition

visual acuity definition

Visual acuity is a measure of how well a person can focus on an object. To test visual acuity, the person may read letters or symbols on a chart from the top down, line by line, covering first one eye and then the other. A visual acuity score is a ratio comparing the person's performance...

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Last updated: Jan 7, 2026

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