glaucoma
B1CEFR level
40/100Rarity: uncommon
TechnicalRegister
A group of conditions in which the optic nerve is progressively damaged, often associated with raised intraocular pressure.
Open-angle glaucoma is usually painless and detected only on routine screening.
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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