Abstract
Primary iris pigment epithelium cysts involve posterior surface of the iris and can occur at pupillary margin or anterior ciliary body. They may be stationary or progressive and sometimes regress spontaneously. These cyst can occasionally lead to angle-closure glaucoma, plateau iris syndrome and secondary pigment dispersion syndrome. A steadily growing cyst may disturb the vision by covering the visual axis and provoke an increase in intraocular pressure (IOP) or even inflammation if it touches the corneal endothelium. There are multiple management options in complicated situations. We report a case of a 17-year-old girl with unusual complaints of hemeralopia and dark-brown discolouration of pupils in both eyes. On examination, she had multiple pigment epithelial iris cysts at the pupillary margins, which were punctured with Nd:Yag laser, and the response was improvement in vision and hemeralopia without any pigment dispersion or IOP changes.
Highlights
Primary iris cyst involves a portion of iris, which is lined by pigment epithelium, while secondary iris cyst are results of some pathology like trauma, inflammations, metastasis, parasites or miotic therapy
Primary iris cysts are less common and mostly congenital, which could be stromal or pigment epithelial cysts. They are of neuroepithelial origin and involve the iris pigment epithelium (IPE) and the ciliary body
We report a case of bilateral, central pigment epithelial cysts of the iris causing hemeralopia, and cosmetic concern to the patient
Summary
Primary iris cyst involves a portion of iris, which is lined by pigment epithelium, while secondary iris cyst are results of some pathology like trauma, inflammations, metastasis, parasites or miotic therapy. Primary iris cysts are less common and mostly congenital, which could be stromal or pigment epithelial cysts. They are of neuroepithelial origin and involve the iris pigment epithelium (IPE) and the ciliary body. Central cysts are rare and account for approximately 3% of all primary IPE cysts.[1] We report a case of bilateral, central pigment epithelial cysts of the iris causing hemeralopia, and cosmetic concern to the patient. We report a case of a 17-year-old girl presented with complaints of difficulty in seeing in bright sunlight and brownish discolouration of pupils of both eyes. There were seven visible dark-brown iris cysts with smooth
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