CTR enhances stability, centration of capsular bag

Cataract surgeons in the United States now have at their disposal an exceptionally useful and beneficial device, the capsular tension ring (CTR), available from two different sources (Morcher Capsular Tension Ring, FCI Ophthalmics; StabilEyes, Advanced Medical Optics Inc.). A simple ring of polymethylmethacrylate (PMMA) with an eyelet at either end, the ring may be inserted into the capsular bag to enhance stability and centration. I have had the opportunity to employ this device and would like to share my current view of its proper use, benefits, and risks.