Anophthalmic Socket Complications

Post-Enucleation Socket Syndrome

Post-enucleation socket syndrome results from volume loss and structural changes after the globe is removed. The ~7 ml of volume lost is only partially replaced by a standard implant (an 18 mm sphere provides ~3 ml; a 20 mm sphere ~4.1 ml), compounded by up to 3 ml of orbital-fat atrophy over time. Manifestations include:

• Enophthalmos — posterior displacement of the implant and prosthesis.
• Deep superior sulcus — hollowing above the upper eyelid from volume loss.
• Lower-eyelid laxity — with a shallow fornix, making prosthesis retention difficult.
• Ptosis or lid retraction — from changes in the levator complex.

Implant Exposure & Extrusion

Implant exposure — a breakdown in the conjunctival covering over the implant — is the most common serious complication. A small exposure may be repaired surgically with a patch graft. Larger exposures or progressive extrusion may require implant removal and replacement, often with a dermis-fat graft. Early recognition and treatment prevents implant loss.

Other Complications

• Hemorrhage — more common in patients on anticoagulants; usually managed conservatively.
• Infection — rare with modern porous implants; most secondary infections respond to antibiotics, though severe cases may require implant removal.
• Poorly fitting prosthesis — the socket changes over time; regular ocularist visits (every 1–2 years) for polishing, refitting, and replacement keep the prosthesis comfortable and natural.