Influence of capsular tension ring implantation on dynamic in vivo capsular apposition and intraocular lens behavior in highly myopic eyes.
Hongzhe Li, Wentao Tong, Zhixuan Hu et al.
✦ AI-curated · Sources linked
In 30 seconds
This prospective randomized clinical trial assessed whether capsular tension ring (CTR) implantation affects capsular apposition and intraocular lens (IOL) behavior after cataract surgery in highly myopic eyes. Swept-source optical coherence tomography and clinical measures were evaluated over follow-up through 6 months in 29 CTR-treated eyes and 30 eyes without CTR. CTR implantation was associated with faster anterior capsular apposition and more frequent posterior capsular apposition from 1 month onward. The CTR group also developed less severe anterior capsular opacification; incomplete posterior apposition was associated with greater risk of posterior capsular opacification.
Key findings
- At 1 day, the CTR group had a smaller lens-anterior capsule distance; at 1 week, a higher proportion had anterior capsular apposition.
- From 1 month onward, posterior capsular apposition occurred more frequently with CTR implantation.
- The CTR group developed less severe anterior capsular opacification; incomplete posterior capsular apposition was associated with higher posterior capsular opacification risk.
- At 1 day, average lens-anterior capsule distance positively correlated with postoperative aqueous depth and IOL rotation.
Why it matters
Capsular apposition is relevant to postoperative IOL behavior and capsular opacification. In this randomized trial of highly myopic eyes, CTR implantation was associated with earlier anterior and more frequent posterior apposition, alongside less severe anterior capsular opacification. These findings help characterize how CTR use may influence postoperative capsular and IOL outcomes in this population, while the reported correlations do not establish that apposition changes caused those outcomes.
What to keep in mind
The trial included 59 eyes and follow-up through 6 months; the abstract does not report quantitative effect estimates for the main outcomes.