| Description | The Henderson Ring is a special design of the popular capsular tension rings (CTR) manufactured by Morcher GmbH of Stuttgart, Germany. The Henderson Ring is an open C-shaped loop made of a single piece of Polymethyl Methacrylate (PMMA). Employing | Designed to stabilize the capsular bag in cases of damaged or missing zonules. The Cionni CTR is specially designed for scleral fixation with suture. Robert J. Cionni, M.D. of the Cincinnati Eye Institute, recognized from his early experience using |