enucleation

enucleation /enu·cle·a·tion/ (e-noo″kle-a´shun) removal of an organ or other mass intact from its supporting tissues, as of the eyeball from the orbit.

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Enucleation

Surgical removal of the eyeball.

Mentioned in: Eye Cancer, Retinoblastoma

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enucleation

[ino̅o̅′klē·ā′shən]

Etymology: L, e, without, nucleus, nut

1 removal of an organ or tumor in one piece.

2 removal of the entire eyeball, performed for malignancy, severe infection, extensive trauma, or control of pain in glaucoma. Local or general anesthesia is used. The optic nerve and muscle attachments are cut; if possible, the surrounding layer of fascia is left with the muscles. A round implant of hydroxyapatite (coralline or syntetic) is inserted, and the muscles are sutured around it, providing a permanent stump to give support and motion to an artificial eye, or an implant of porous polyethylene is inserted, allowing the rectus muscle to be sutured directly to the implant. After surgery, pressure dressings are kept in place for 1 or 2 days to prevent hemorrhage. Other possible complications include thrombosis of nearby blood vessels, which may lead to infection, including meningitis.

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enucleation [e-noo″kle-a´shun]

removal of an organ or other mass intact from its supporting tissues, as of the eyeball from the orbit.

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enucleation

removal of an organ or other mass intact from its supporting tissues, as of the eyeball from the orbit.

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lateral subconjunctival enucleation

involves a lateral canthotomy and a subconjunctival approach to the globe, extraocular muscles and optic nerve.

transpalpebral enucleation

removal of eyelids, conjunctiva and extraocular muscles along with eyeball.

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enucleation

Removal of an eye from its socket. It is usually performed to reduce pain in a blind eye, when there is a risk of sympathetic ophthalmia following trauma, or when there is a malignant tumour in the eye. Immediately following the operation a spherical implant (made up of hydroxyapatite, polyethylene, or silicone rubber) is placed into the eye socket to be replaced several weeks later by an artificial eye. See evisceration; artificial eye.