Effect of Capsular Tension Ring on Rotational Stability of Loop-Haptic Intraocular Lens in Highly Myopic Patients

Abstract

PURPOSE

To compare the rotational stability, tilt and decentration of loop-haptic intraocular lenses (IOLs) in highly myopic patients with and without capsular tension ring (CTR) implantation.

DESIGN

Randomized controlled trial.

METHODS

Consecutive highly myopic patients (axial length ≥ 26.00 mm) scheduled to undergo phacoemulsification with loop-haptic IOL implantation were randomly assigned to receive either CTR implantation or no CTR. The axial orientation of the IOL was measured at the end of surgery (EOS), and at 1 day, 1 week, 1 month, and 3 months postoperatively. Swept-source optical coherence tomography was performed at each follow-up visit to evaluate the tilt and decentration of IOL.

RESULTS

A total of 36 eyes with CTR implantation and 36 eyes without CTR were included. Absolute IOL rotation was significantly lower in the CTR group than in the Non-CTR group from EOS to 1 day (P = .039) and from EOS to 3 months (P = .018). Subgroup analysis demonstrated that CTR implantation significantly reduced IOL rotation in eyes with thick crystalline lenses (P = .041). Although the CTR group consistently exhibited slightly lower values of tilt and decentration at each follow-up visit, the differences were not statistically significant (All P > .05).

CONCLUSIONS

CTR implantation improves the postoperative rotational stability of loop-haptic IOLs and mitigates the effect of thick crystalline lenses in highly myopic patients, while having no significant impact on IOL tilt or decentration.