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Editor,—Iris cysts may be primary—that is, developmental in nature, or secondary following surgery or penetrating trauma. In the latter case, the condition is due to implantation of epithelial cells from the ocular surface, and thus these lesions are also referred to as epithelial implantation cysts.1 We report the successful treatment of a post-traumatic, recurrent, giant iris cyst by needle aspiration combined with intracyst administration of dilute mitomycin C.
CASE REPORT
A 32 year old woman was referred with the complaint of decreased vision as a result of a recurrent giant iris cyst in the left eye. She had a vague history of penetrating trauma involving a piece of glass at the age of 8. Laser cystotomy had been performed at other institutions 7 and 4 years before presentation at our hospital; however, recurrence of the cyst occurred soon each time. On our initial examination, the visual acuity was 20/15 right eye and 20/200 left eye. Slit lamp biomicroscopy revealed a full thickness corneal scar and a large iris cyst centred in the inferonasal quadrant, extending over …