NCT07126470Recruiting
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 Multi-center, Randomized, Self-controlled Study
Source: ClinicalTrials.gov · Last updated 23 Apr 2026
Brief summary (registry, in English)
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.
- Status (registry)
- Recruiting
- Study type
- Interventional
- Enrollment
- 88 (estimated)
- First submitted
- 10 Aug 2025
- Start date
- 25 Aug 2025
- Primary completion date
- Aug 2027
- Lead sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
- Diseases
- Retinitis pigmentosa
- NCT number
- NCT07126470
What you commit to
- Study type: Interventional
- Planned participants: 88
- From 25 Aug 2025 to the primary completion date, Aug 2027
- 3 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other illness
- 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.
Other
- Severe zonular weakness (e.g., zonular dialysis \>90°, lens subluxation/dislocation)
Who the study is looking for
- 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.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (3)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Zhongshan Ophthalmic Center,Sun Yat-Sen University Coordinator of this site? Confirm its status | Guangzhou | China | Recruiting |
| Shenzhen Eye Hospital Coordinator of this site? Confirm its status | Shenzhen | China | Not yet recruiting |
| Wuhan Aier Eye Hospital Coordinator of this site? Confirm its status | Wuhan | China | Not yet recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.