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cataract

cataract A cataract is a clouding of the eye’s natural lens in one or both eyes.

A cataract is a clouding of the eye’s natural lens in one or both eyes. This reduces visual sharpness and can eventually lead to blindness; it may occur in childhood but is more common in older people.

Also see

Sources

Drafting source: NCI Thesaurus. Flat export snapshot 2026-10-18. “Cataract” (C26713).
CC-BY-4.0 · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: b27ca135beadd46c343d248135377c5077c5447fe11b93803bfab866b84fcd38

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

Version 1 · SHA-256: eb69866cac6555047eab5a9645a13fd20850035e2ee21b857717300bb8be1d2a

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