As nouns,
extracapsular surgery is a hypernym of
phacoemulsification; that is,
extracapsular surgery is a
word with a broader meaning than
phacoemulsification:
- phacoemulsification: extracapsular surgery for cataracts in which ultrasonic sound breaks the cortex and nucleus of the lens into small fragments that are then vacuumed away through a small tube
- extracapsular surgery: cataract surgery in which only the front of the lens is removed; the back of the lens capsule remains intact and provides support for the lens implant