Tests a capsule ring during cataract surgery in people with retinitis pigmentosa
Tests a capsule ring in adults with retinitis pigmentosa having cataract surgery.
Plain-language title generated from the registry record
Registry title: Impact of Capsular Tension Ring on Intraocular Lens Position in Retinitis Pigmentosa Cataract Patients
Key facts
- Where
- Guangzhou, Shenzhen, and Wuhan, ChinaSee the 3 sites
Where in China
- Zhongshan Ophthalmic Center,Sun Yat-Sen UniversityGuangzhou, ChinaTaking people
- Shenzhen Eye HospitalShenzhen, ChinaNot yet recruiting
- Wuhan Aier Eye HospitalWuhan, ChinaNot yet recruiting
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Zhongshan Ophthalmic Center, Sun Yat-sen University
- Trial code
- NCT07126470
- Record updated
- 23 April 2026
- Original description
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.Read full original descriptionShow less
Effect of Capsular Tension Ring Implantation on Postoperative IOL Position in Retinitis Pigmentosa Patients With Cataract: a Multi-center, Randomized, Self-controlled Study
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.
Inclusion: 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: History of intraocular surgery; 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; Severe zonular weakness (e.g., zonular dialysis >90°, lens subluxation/dislocation).