trabeculectomy
C2CEFR level
95/100Rarity: very rare
TechnicalRegister
A glaucoma-filtering operation creating a new channel for aqueous outflow to lower intraocular pressure.
When drops failed to control the pressure, a trabeculectomy fashioned a guarded fistula beneath the flap.
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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