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Peripheral iris block often causes plateau iris syndrome in younger patients

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Peripheral iris block often causes plateau iris syndrome in younger patients with recurrent angle closure, according to a study by researchers in Switzerland.

Roland Stieger, MD, and colleagues reviewed records for 137 patients aged younger than 60 years who had symptoms of angle closure between 1995 and 2005. They found that 30 (22%) of these 137 patients had been diagnosed with plateau iris syndrome.

However, after a clinical review of 76 patients, which involved gonioscopy and ultrasound biomicroscopy, investigators identified another 34 patients in whom plateau iris syndrome caused symptoms of persistent angle closure, according to the study.

"The prevalence of [plateau iris syndrome] in our patient population with recurrent angle closure symptoms in spite of initial iridotomy or iridectomy was 54%," the authors said.

"For proper diagnosis and therapy, ultrasound biomicroscopy and gonioscopy should be performed on every young individual with angle closure symptoms," they said.

The study is published in the July issue of Clinical & Experimental Ophthalmology.