Define enucleation, evisceration and exenternation. Answer Enucleation is the removal of the eye from the orbit while preserving all other orbital tissue. Evisceration is the removal of the contents of the eye ie. uvea, retina, lens and vitreous while leaving the sclera and extraocular muscles intact. Exenternation is the removal fo the eye and entire orbital contents including the eyelids, ocular muscle and orbital fat. What are the indications for enucleation? Answer Malignant intraocular tumour Painful blind eye unresponsive to treatment. Severe ocular trauma without useful vision; enucleation to avoid sympathetic ophthalmia. Unsightly blind eye. Congenital anophthalmos. Implant helps to make the orbit cavity grow and avoid asymmetry. When would you perform exenternation ? Answer Exenternation is only performed for highly malignant tumours and this include: extensive sebaceous cell carcinoma malignant lacrimal gland tumour advanced rhabdomyosarcoma occasionally extensive fungal infection not responding to treatment. What are the advantages of evisceration over enucleation. Answer The advantages being: preservation of the orbital anatomy and reduced occurrence of post-enucleation socket syndrome. easier technique better ocular motility Below is a tray of instruments used for enucleation. Click the picture below for an enlarged instrument and question. Once you have answered the question, click the next instrument from left to right.
What are the indications for enucleation?
When would you perform exenternation ?
What are the advantages of evisceration over enucleation.
Below is a tray of instruments used for enucleation. Click the picture below for an enlarged instrument and question. Once you have answered the question, click the next instrument from left to right.