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What is a laser peripheral iridotomy? A laser peripheral iridotomy is a treatment used to treat angle closure. If you have healthy eyes, the fluid in your eye (aqeous humour) flows through your pupil into the front of your eye, and drains away through drainage channels called the trabecular meshwork. of 4 Having a laser peripheral iridotomy The aim of this information sheet is to answer some of the questions you may have about having a laser peripheral iridotomy.
Definition. Laser iridotomy is a surgical procedure that is performed on the eye to treat angle closure glaucoma, a condition of increased pressure in the front chamber (anterior chamber) that is caused by sudden (acute) or slowly progressive (chronic) blockage of the normal circulation of fluid within the eye.he purpose of a laser iridotomy is to allow an equalization of pressure between the anterior (front) and posterior (back) chambers of the eye by making a hole in the superior peripheral iris.