Abstract: When there are anomalies in the zonules,the safety of cataract surgery is significantly compromised,leading to increased risks of vitreous prolapse,capsular rupture,residual lens cortex,and dislocation of the intraocular lens(IOL). The use of capsular tension rings(CTRs)and related intraocular devices allow ophthalmologists to maintain the stability of the capsular bag easily during complex cataract surgeries,enhancing the controllability of anterior segment procedures and reducing or alleviating intraoperative and postoperative complications. Moreover, they improves the prognosis of zonular anomalies related conditions. With continuous advancements in design and materials,the indications for capsular tension rings are expanding gradually. Especially for highly myopic patients,CTRs can effectively stabilize the position of the IOL,provide additional support to the relaxed zonules,inhibit migration and proliferation of residual lens epithelial cells,and improve patients' visual quality while reducing the incidence of retinal detachment post-surgery. (Int Rev Ophthalmol, 2023, 47: 315-321)

Key words: capsular tension ring, zonular, phacoemulsification, posterior capsule opacification, iris defect