Canaloplasty-A New Approach to Nonpenetrating Glaucoma Surgery

Canaloplasty is a new nonperforating glaucoma operation, which utilizes the experience with viscocanalostomy and adds a further surgical step to keep the ostia open and to stretch the trabecular meshwork permanently. During the operation, a deep sclerectomy and viscocanalostomy are performed as described by Stegmann et al. After this, a 200-2m microcatheter (iTrack; iScience Surgical Corp, Menlo Park, Calif) is used to dilate the Schlemm canal circumferentially, injecting microvolumes of viscoelastic during catheterization. Retracting the catheter subsequent to the dilatation, the surgeon places a 10-0 Prolene tensioning suture loop in the canal and ties it to apply tension to the trabecular meshwork.