Search Result for "filtration surgery":
Wordnet 3.0

NOUN (1)

1. eye surgery that opens a passage allowing excess aqueous humor to drain into surrounding tissues; a treatment for glaucoma; 



WordNet (r) 3.0 (2006):

filtration surgery
    n 1: eye surgery that opens a passage allowing excess aqueous
         humor to drain into surrounding tissues; a treatment for
         glaucoma