Capsular Tension Ring Cataract Surgery

4 5 ctrs of various designs eg standard cionni rings for sclera fixation ahmed capsular tension segments ctss are now available for use in eyes with weak zonules.

Capsular tension ring cataract surgery. When you have one of the older capsular tension rings sometimes it is very difficult depending on how loose the bag is to make the ctr go around the capsule without causing further damage. Circular expansion and stabilization of the capsular bag s afe iol centration in eyes with zonular dehiscence p revents iol decentration. J cataract refract surg 2002. Although the integrity of the posterior lens capsule is partially preserved the ring may shift through a small tear in the bag even during its placement and may cause retinal tears retinal detachment or just remain silently suspended in the vitreous.

They are very useful in cases of trauma with focal zonular loss and may provide additional stability in certain cases of progressive zonulopathy like pseudo exfoliation. The ctr was first introduced in 1991 by hara et al and was implanted in the first human eye during cataract surgery in 1993 by witschel and legler. Effect of a capsular tension ring on intraocular lens decentration and tilting after cataract surgery. Pmma capsular tension ring ctr ophtec capsular tension rings are indicated for the stabilization of the capsular bag in the presence of weakened or compromised zonules.

Prevention of posterior capsule opacification using capsular tension ring for zonular defects in cataract surgery. Pediatric cataract surgery with an iol almost always involves primary posterior capsulo rhexis which is defined as complex cataract surgery in the cpt description. What is a capsular tension ring ctr. I use the morcher 15 for almost all of my cases and one of the reasons is it is designed so that it makes the turn much much easier.

In conclusion dislocation of the capsular tension ring is a rare and unexpected complication of cataract surgery. Also complex cataract surgery occurs when the surgeon is required to suture the haptics of an iol or implant a capsular tension ring. Capsular tension rings are flexible plastic loops which are designed to exert outward force at the capsular bag equator to help distribute forces and help support areas of zonular loss.