Capsular Tension RingCapsular Tension Ring allow expansion and stabilization of the capsular bag to facilitate a safe IOL implantation and maintain good IOL centration. Capsular tension ring is a highly flexible clear PMMA ring of haptic thickness 0. 20 mm Indications Anticipated zonular dehiscence Lens subluxation Expected complications during phaco surgery Implantation of foldable IOLs High risk myopic eyes Advantages Circular expansion and stabilization of the capsular