iridotomy
C2CEFR level
96/100Rarity: very rare
TechnicalRegister
Creation of a hole in the iris, usually by laser, to relieve or prevent angle closure.
A prophylactic laser iridotomy was performed in the fellow eye to avert an acute attack.
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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