Judged: two independent readers; copy check clear.

Snellen chart

Snellen chart A Snellen chart is an eye chart used while checking vision, serving as the point the person looks at as different lenses are tried to find the correction that gives the clearest sight.

A Snellen chart is an eye chart used while checking vision, serving as the point the person looks at as different lenses are tried to find the correction that gives the clearest sight.

Also see

Sources

Drafting source: NCI Thesaurus. Flat export snapshot 2026-10-18. “Subjective Refraction” (C190612).
CC-BY-4.0 · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: b27ca135beadd46c343d248135377c5077c5447fe11b93803bfab866b84fcd38

These citations identify the drafting sources. 2/2 independent reader passes against the pinned source packet. The drafter does not count as a reader. Source institutions do not endorse this dictionary.

Cite this entry

PsychTerms (psychterms.org), CC BY 4.0, version 1. “Snellen chart.” Development preview.

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