Capsular Tension Ring Cataract Surgery

Capsular tension rings ctrs well known to ophthalmic surgeons are c shaped devices used to stabilize the capsular bag of the crystalline lens during cataract surgery in eyes with zonular weakness.

Capsular tension ring cataract surgery. They convert most cases of compromised zonular integrity from complex to routine and give a level of protection from decentration. By increasing the likelihood of capsular bag placement of an intraocular lens the risks associated with alternative fixation in the anterior chamber or to the iris and sclera can be lessened. Capsular tension rings ctr are inserted into the capsular bag during cataract surgery for supporting areas of zonular laxity and maintaining shape of the bag. 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.

Capsular tension rings 1 question. The morcher capsular ten sion ring is a prosthetic device designed to stabilize the crystalline lens capsule in the presence of weak or partially absent zonules in adult patients under going cataract extraction with an intraocular lens. Capsular tension devices improve the safety and success of cataract surgery when the integrity of the zonular apparatus is in question. What is a capsular tension ring ctr.

The capsular tension ring ctr a circular polymethylmethacrylate pmma filament designed to be placed within the capsular bag creates outward forces thereby redistributing zonular tension. Fine who inserted 450 ctrs during the early clinical studies alone. 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. The tool is now widely used as an integral step in cases where there is a loss of zonular integrity.

Indicated in their large series including 9 528 cataract surgeries that the frequency of capsular tension ring use was 0 7. Capsular tension rings stabilize the cataract and make the surgery safer noted dr. Circular expansion and stabilization of the capsular bag s afe iol centration in eyes with zonular dehiscence p revents iol decentration after capsular shrinking.