Subconjunctival seeding of ciliary body melanoma after trabeculectomy: A surgical pitfall.

A rare case of ciliary body melanoma (CBM) with subconjunctival extension following prior trabeculectomy is presented. The 66-year-old female patient experienced recurrent ocular discomfort and subconjunctival pigmentation in the left eye. Clinical evaluation identified a pigmented subconjunctival mass, secondary glaucoma, and evidence of previous filtration surgery. Imaging and histopathology confirmed CBM with extraocular extension, and the patient subsequently underwent enucleation; the postoperative recovery was uneventful. This case underscores the importance of considering intraocular tumors such as CBM in patients presenting with unilateral secondary glaucoma, especially prior to filtration surgery. Surgical manipulation in undiagnosed CBM may facilitate tumor dissemination beyond the eye, emphasizing the necessity of comprehensive preoperative evaluation.