Enucleation means -
There are three main surgical techniques by which all or part of the orbital contents are removed :-


Evisceration: - Removal of the eye with its inner two coats, leaving behind the sclera and extraocular muscles.
Enucleation: - Removal of eyeball with a portion of optic nerve from the orbit while preserving all other orbital structures.
Exenteration: - It is the most radical of the three procedures and involves removal of the eye, adnexa and part of the bony orbit.
Removal of the contents of globe
Removal of the contents of globe and sclera except a frill around the optic nerve
Removal of entire globe along with portion of optic nerve
Removal of the entire contents of orbit