| NOUN | act | extracapsular surgery | cataract surgery in which only the front of the lens is removed |
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| Meaning | 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. | |
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| Narrower | 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 |
| Broader | cataract surgery | eye surgery that involves removing all or part of the lens and replacing it with an intraocular lens implant |
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