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Laser treatment in acute angle closure can lead to IOP increase, study finds

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KOWLOON, China — Laser treatment of acute primary angle closure can lead to intraocular pressure rises in the long term, according to a study here.

Almost a third of Chinese eyes with acute primary angle closure treated with immediate laser peripheral iridoplasty followed by laser peripheral iridotomy developed peripheral anterior synechiae and an increase in intraocular pressure, according to Jimmy S.M. Lai, FRCS, FRCOphth and colleagues

Dr. Lai and associates followed 30 eyes of 29 patients who were treated with either argon or diode laser peripheral iridoplasty followed by laser peripheral iridotomy for acute primary angle closure. The mean follow-up was 33 months.

Twenty-one eyes had no further attacks and maintained normal IOP without medication. Nine eyes (30%) developed chronic angle-closure glaucoma with peripheral anterior synechiae. All eyes had pigmented laser marks on the peripheral iris, but none had peripheral corneal burn.

The study is published in the December issue of Journal of Glaucoma.