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Abstract #18317 Published in IGR 3-3
Morphology of the trabecular meshwork three years after erbium:YAG laser trabecular ablation
Dietlein TS; Jacobi PC; Mietz H; Krieglstein GKOphthalmic Surgery and Lasers 2001; 32: 483-485
Laser trabecular ablation (LTA) is an ab interno approach with the purpose of improving outflow facility by removing trabecular tissue and opening Schlemm's canal. In a blind eye with secondary glaucoma following silicone oil surgery, erbium:YAG LTA had been performed applying 12 neighboring single laser pulses (5-7 mJ pulse energy, 200 μsec pulse duration) to the trabecular meshwork. Enucleation was performed three years after the procedure did not achieve pressure control. Light-microscopy revealed neither marked scarring nor endothelial proliferation in the treated trabecular meshwork. However, most of the recognizable ablation craters failed to open Schlemm's canal. Although limited scar formation within the trabecular meshwork after LTA is a promising aspect, the present technique of Er:YAG LTA still needs technical and surgical improvements in order to guarantee the reliable and reproducible opening of Schlemm's canal.
Dr T.S. Dietlein, Department of Ophthalmology, University of Cologne, Cologne, Germany
Classification:
12.2 Laser iridotomy (Part of: 12 Surgical treatment)