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Laser ablation used in pilot study for chronic open-angle glaucoma

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Excimer laser trabecular ablation ab interno removes corneoscleral trabecular meshwork, opening Schlemm's canal and thus facilitating outflow, said Thomas Neuhann, MD. He and colleagues conducted a pilot study on 14 eyes to assess the intraocular pressure-lowering effect of the procedure in open-angle glaucoma.

Dr. Neuhann, along with Armin Scharrer, MD, and Eduard Haefliger, MD, used an excimer laser with a 200-µm fiber. The average intraocular pressure (IOP) decrease was about 40% of preop IOP. The use of laser technology in glaucoma therapy gives surgeons new possibilities for iridocorneal microsurgery, said Dr. Neuhann.

Unlike ab externo laser operations, this form of excimer laser trabeculoplasty does not cause a deterioration in the conjunctiva because of its ab interno approach. More complete results of the study will be published in the October 1 issue of Ocular Surgery News.