CLINICAL FEATURES AND SURGICAL MANAGEMENT OF IRIS STROMAL CYST

To report the clinical features and the surgical management of a benign iris stromal cyst.

University Hospital Ayr, Ayr, Scotland

A 62-year-old Caucasian male was referred to the corneal service with a swelling in the inferior iris in the right eye. There was no past ocular or medical history of significance. On examination corrected distance, visual acuities were 6/24 (Snellen) in the right eye and 6/6 in the left eye. Slit lamp examination reviled a large (4 mm x 3 mm) iris stromal cyst in the inferior part of the iris. The wall of the iris cyst was rubbing against the inferior corneal endothelium. Specular microscopy showed a corneal endothelial cell count of 1700 in the right eye and 2600 in the left eye.  A dilated examination revealed a grade II nuclear sclerotic cataract. Fundus examination was unremarkable.Following informed consent he underwent aspiration of the cyst fluid followed by injection of 5 FU to act as a sclerosing agent. This led to the complete resolution of the cyst. A follow-up examination at 3 months showed no evidence of recurrence or corneal loss due to mechanical touch. 

 Aspiration of the cyst fluid combined with injection of a sclerosing agent ( 5 FU) lead to complete resolution of benign iris cyst.

A benign iris cyst can lead to corneal endothelial cell loss due to mechanical touch. Aspiration of the cyst fluid combined with injection of a sclerosing agent can lead to complete resolution of benign iris cyst.