Glossary of Eye Definitions and Glasses Terms

Want to discover all things eyewear? Find out more about your eyeglasses and sunglasses, word by word.

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Visual Acuity

Visual acuity, meaning the eyeā€™s ability to distinguish details at a standard distance, is measured through a visual acuity test often used to diagnose common refractive errors and detect changes in vision over time. In an eye acuity test, the patient is asked to read lines from a chart at a distance covering one eye at a time to assess their refractive error for a more precise diagnosis.

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