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April 1986

Q-Switched Neodymium-YAG Laser IridotomyA Field Trial With a Portable Laser System

Author Affiliations

From the Glaucoma Service and Dana Center for Preventive Ophthalmology, The Wilmer Institute, The Johns Hopkins Hospital, Baltimore (Dr Robin and Ms Arkell); Coherent Medical, Palo Alto, Calif (Ms Gilbert and Mr Goossens); and the Alaska Native Medical Center, Anchorage (Drs Werner and Korshin).

Arch Ophthalmol. 1986;104(4):526-530. doi:10.1001/archopht.1986.01050160082017

• The efficacy of a small, portable, battery-operated, Q-switched neodymium-YAG laser with a slit-lamp delivery system was evaluated in a short-term pilot study. Iridotomies were created in 44 Eskimo eyes (23 patients) with occludable angles in Alaska's Kotzebue region. The laser was transported as regular baggage, was used in three villages (utilizing available facilities), and was operational within five minutes. Patent iridotomies were achieved in all eyes and with one pulse in 18 eyes (44%). Complications included transient bleeding from the iridotomy site in 23 eyes (52%), focal corneal opacities in 11 eyes (25%), and a transient immediate postoperative intraocular pressure elevation in nine eyes (20%). This appears to be the first portable laser system that can be used in frontier areas and underdeveloped nations to prophylactically treat pupillary-block glaucoma.