Effectiveness of prophylactic capsular tension ring implantation during cataract surgery in highly myopic eyes
Xiaoxin Hu1, Jiao Qi, Kaiwen Cheng
1From the Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China (Hu, Qi, Cheng, He, Zhang, Zhao, Lu, Zhu); NHC Key laboratory of Myopia and Related Eye Diseases; Key laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai, China (Hu, Qi, Cheng, He, Zhang, Zhao, Lu, Zhu); Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China (Hu, Qi, Cheng, He, Zhang, Zhao, Lu, Zhu).
Purpose:
To assess the effectiveness of prophylactic capsular tension ring (CTR) implantation during cataract surgery in highly myopic eyes.
Setting:
Eye and Ear, Nose, and Throat Hospital of Fudan University, Shanghai, China.
Design:
Prospective cohort study.
Methods:
Consecutive highly myopic patients treated with cataract surgery were recruited and randomized to undergo CTR implantation or not. The outcomes compared between the 2 groups included axial lens position (ALP), intraocular lens (IOL) decentration and tilt, area of anterior capsule opening, severity of anterior capsular opacification (ACO), and posterior capsular opacification (PCO) at 1 year postoperatively.
Results:
A total of 55 highly myopic eyes with CTRs implanted and 55 without were included in the analysis. At 1 year postoperatively, no significant differences were detected between the CTR and non-CTR groups for the mean ALP, IOL decentration, or tilt (all P > .05). However, the CTR group had a significantly larger area of anterior capsule opening (23.62 ± 3.30 mm2 vs 21.85 ± 2.30 mm2, P = .003), and less severe ACO (P = .033) and PCO (PCO-3 mm: 0.06 ± 0.13 vs 0.13 ± 0.20, P = .038; PCO-C: 0.15 ± 0.18 vs 0.25 ± 0.26, P = .026) than the non-CTR group. The corrected distance visual acuity, prediction error, and higher-order aberrations did not differ between the 2 groups (all P > .05).
Conclusions:
In highly myopic eyes, although prophylactic CTR implantation can reduce the severity of capsular contraction and opacification, it does not significantly affect postoperative IOL stability or visual outcomes.
