Role of trichloroacetic acid in treating posterior conjunctival cyst in an anopthalmic socket.

Orbital cysts in anophthalmic socket are infrequent. Most of the cysts reported are anterior and the inability to retain a formerly well-fitted prosthesis is the most common symptom. We present a posterior conjunctival cyst developed after a dermo-fat graft reconstruction in an eviscerated socket. Eleven years after evisceration surgery due to irreparable ocular trauma an extrusion of the orbital implant occurred. Removal of the orbital implant and a socket reconstruction with dermis fat graft was done. Three years later, the patient again returned back to the treating ophthalmologist with complaint of an inability to retain the formerly well-fitted artificial prosthesis. A detailed ophthalmic examination failed to reveal any abnormality. The CT scan showed a posteriorly located conjunctival cyst in the right orbit. Tricholoroacetic acid (TCA) was injected intracystically into the conjunctival cyst. Ten months of follow-up did not show any recurrence of the conjunctival cyst and allowed complete tolerance of the prosthesis. This case report highlights the role of tricholoacetic acid in treating a posteriorly located conjunctival cyst in an anophthalmic socket.