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Pulsed neodymium-YAG laser trabeculotomy: energy requirements and replicability.
  1. G N Dutton,
  2. D Allan and
  3. S A Cameron
  1. Tennent Institute of Ophthalmology, Western Infirmary, University of Glasgow.

    Abstract

    Short pulsed laser trabeculotomy has been shown to reduce intraocular pressure in patients with primary open angle glaucoma. This study seeks to determine the energy levels required to produce a fistula into the canal of Schlemm for four different Q-switched neodymium-YAG lasers. The laser was fired at fixed human trabecular meshwork specimens at a range of energy settings for each laser and the characteristics and replicability of the lesions produced were analysed. Energy levels between 3 and 5 mJ were sufficient to produce fistulae into the canal of Schlemm with an approximately 50% success rate for each instrument.

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