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Unroofing of Schlemm's canal without entering the anterior chamber has been performed previously to lower intraocular pressure. Initial results were good, but long-term results were discouraging, and the techniques were abandoned. Recently, two variations have surfaced. Viscocanalostomy is a technique devised by Robert Stegmann of South Africa. The glaucoma drainage device (collagen wick) was initially introduced by Koslov in Russia. These techniques are described in this article.
Dr. A.S. Crandall, Ophthalmology Department, John A. Moran Eye Center, 50 North Medical Drive, Salt Lake City, UT 84132; USA
12.8.3 Non-perforating (Part of: 12 Surgical treatment > 12.8 Filtering surgery)