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

RecruitingNAAges 18 Years - anyAllZhongshan Ophthalmic Center, Sun Yat-sen Universi…
NCT07126470 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

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.

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📋 Eligibility rules (as published)
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.
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What it tests

  • CTR implantation
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Where

3 sites
Zhongshan Ophthalmic Center, Sun Yat-sen University
Guangzhou, China
Shenzhen Eye Hospital
Shenzhen, China
Wuhan Aier Eye Hospital
Wuhan, China
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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