keratitis
C2CEFR level
88/100Rarity: very rare
TechnicalRegister
Inflammation of the cornea, which may be infective and can threaten sight if it involves the visual axis.
Contact-lens-related microbial keratitis needs urgent corneal scrapes and intensive topical antibiotics.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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