โรคต้อแก้วตา ภาษาอังกฤษ

From Late Middle English cataract, cataracta, cateract, cateracte (“(medicine) clouding of the lens in the eye”), from Old French cataracte (“clouding of the lens in the eye”), and then either: * from its etymon Latin cataracta (“portcullis”) (in the sense of something blocking vision as a portcullis blocks a gateway), from Ancient Greek καταρ(ρ)άκτης (katar(rh)áktēs, “act of rushing down; portcullis”) (see further at etymology 1); or * from clāthrāta (in fenestra clāthrāta (“window grating”)), an inflected form of clāthrātus (“grated, latticed, clathrate”), from clāthrī (“grate, lattic”) + -ātus (suffix denoting possession of something, forming adjectives from nouns). Clāthrī is derived from Doric Greek κλᾷθρα (klāîthra), ultimately from Proto-Indo-European *(s)kleh₂w- (“crook, hook; peg; to close something”).