Laser treatment of primary ring-shaped epithelial iris cyst.

Abstract

SUMMARY This is the first report of a ring-shaped, primary cyst of the iris pigment epithelium. The patient, a 28-year-old woman, presented with angle closure glaucoma. Ocular pressure was controlled medically, and the iris cyst was treated by argon laser photocoagulation. The derivation of the cyst, differential diagnosis, and mechanism of angle closure glaucoma are discussed.

Angle closure in younger patients

“…When large or extensive, they may produce angle closure [39][40][41][42][43][44][45][46] (Table IV). In a UBM study of 90 eyes with primary neuroepithelial cysts, more than three cysts per eye were found in 34 eyes (37.8%).…”

Inadvertent rupture of iridociliary cyst following transscleral Diode laser

“…[1–3] A postulated mobility of the ring-shaped iridociliary cyst during movements of the pupil might make an additional contribution to the angle closure. [4] Absolute glaucoma, as in the left eye of our patient, is not attributed to iris or ciliary body pigment epithelial cyst(s) in the past.…”

“…[1–3] Only a single case of unilateral, solitary, ring-shaped iridociliary cyst presenting with acute angle closure has been reported. [4] Here, we present a patient with bilateral, primary, ring-shaped, solitary iridociliary cysts. There was a marked inter-eye asymmetry as regarding intraocular pressure (IOP), iridocorneal angle, and optic nerve head.…”

An uncommon case of primary iris cyst managed with Nd YAG laser

“…When they obscure pupillary axis or cause pressure symptoms, surgery or by Laser cystostomy as done in our case is required. 1,6,7 An adequate steroid cover and antiglaucoma measure should be considered to prevent any Anterior Chamber reaction.…”