RECRUITINGINTERVENTIONAL

Impact of Capsular Tension Ring on Intraocular Lens Position in Retinitis Pigmentosa Cataract Patients

Effect of Capsular Tension Ring Implantation on Postoperative IOL Position in Retinitis Pigmentosa Patients With Cataract: a Single-center, Randomized, Self-controlled Study

About This Trial

This is a self-controlled randomized clinical trial to investigate the effect of capsular tension ring (CTR) implantation on intraocular lens (IOL) position in cataract patients with retinitis pigmentosa(RP). Each patient will receive CTR implantation in one eye, with the fellow eye serving as control. Postoperative outcomes, including visual acuity, IOL position, and postoperative complications will be compared between eyes.

Who May Be Eligible (Plain English)

Who May Qualify: - Age ≥ 18 years. - Clinical diagnosis of retinitis pigmentosa (RP). - Bilateral cataract meeting the indications for IOL implantation. - Willingness to participate in the study and provision of signed willing to sign a consent form. Who Should NOT Join This Trial: - History of intraocular surgery. - Severe zonular weakness (e.g., zonular dialysis \>90°, lens subluxation/dislocation) - Other ocular comorbidity: such as pseudoexfoliation syndrome, ocular trauma, corneal dystrophies, uveitis, etc. - Severe systemic diseases: such as severe hypertension, diabetes, heart disease, Alzheimer's, Parkinson, etc. Always talk to your doctor about whether this trial is right for you.

Original Eligibility Criteria

View original clinical language

Inclusion Criteria: * Age ≥ 18 years. * Clinical diagnosis of retinitis pigmentosa (RP). * Bilateral cataract meeting the indications for IOL implantation. * Willingness to participate in the study and provision of signed informed consent. Exclusion Criteria: * History of intraocular surgery. * Severe zonular weakness (e.g., zonular dialysis \>90°, lens subluxation/dislocation) * Other ocular comorbidity: such as pseudoexfoliation syndrome, ocular trauma, corneal dystrophies, uveitis, etc. * Severe systemic diseases: such as severe hypertension, diabetes, heart disease, Alzheimer's, Parkinson, etc.

Treatments Being Tested

PROCEDURE

CTR implantation

Device: CTR (275001G, OPHTEC BV, Netherlands) All patients undergo uneventful phacoemulsification by a 2.2 mm temporal transparent corneal incision using Centurion Vision System (Alcon Laboratories, Fort Worth, TX, USA). After the nucleus and cortex are removed, a capsular tension ring is implanted in the capsular bag and then IOL (J\&J Tecnis DCB00) is implanted.

Locations (1)

Zhongshan Ophthalmic Center, Sun Yat-sen University

Guangzhou, Guangdong, China