A CTR is a 270 degree open PMMA ring placed in the capsular bag during cataract surgery in cases with zonular instability or weakness.
Product Features:
All types made from Clinical Quality UV absorbing PMMA, they are
- Capsular tension rings (standard type)
- For cases involving less than 4 clock hours (4 positions) of zonular dialysis, a standard CTR is suitable.
Indications:
- Stabilization of the crystalline lens capsule in the presence of weak or absent zonules.
- Pseudoexfoliation (lead to lens capsular damage, most common in glaucoma).
- Prior trauma which leads to Zonulysis( damage of zonules) or capsular rupture.
- Expected complications during phaco surgery.
- Situations in which sudden unfolding of a foldable IOL might cause zonular breakage or dislocation of the IOL.
- Repositioning of IOL decentration.
- Marfan syndrome (results in subluxated lens with weak zonules).
Capsular Tension Ring (CTR):
- CTR is an open-ended,
- flexible horseshoe-shaped polymethyl methacrylate (PMMA) filament.
- with two eyelets at either end.
Benefits:
- It is used in cases involving less than 4 clock hours of zonular dialysis.
- Ensures stable conditions during surgery.
- Prevents capsular fibrosis.
Models:
| Model No | CTR 10 | CTR 11 |
| Overall Diameter | 10.00 mm | 11.00 mm |
| Closed Diameter | 12.00 mm | 13.00 mm |