Biometric Changes After Intervention of Anterior Chamber Angle : an Observational Study
Recruiting now
Conditions studied: Angle-closure Glaucoma, Minimally Invasive Glaucoma Surgery, Goniosynechialysis, Goniotomy, Glaucoma
In brief
The drainage angle in the anterior chamber of the eye mediates the outflow of aqueous humor, and pathological changes here can lead to high intraocular pressure and glaucoma. Minimally invasive glaucoma surgery, particularly angle surgery, has advanced recently, allowing clear visualization of angle structures like the trabecular meshwork and Schlemm's canal using surgical goniolens. Techniques for angle intervention include widening the angle, reopening closed angles, and rebuilding outflow pathways using methods such as laser peripheral iridotomy, Argon laser peripheral iridoplasty, and mechanical separation of adhered tissues. Our research team plans to conduct imaging studies to track the healing of angle tissues post-surgery, aiming to support innovation and standardization of minimally invasive angle surgery.
Key facts
- Study ID
- NCT06492538
- Run by
- Zhongshan Ophthalmic Center, Sun Yat-sen University
- People needed
- 300
- Starts
- 2023-12-01
- Expected to finish
- 2025-12-30
- Last updated by the study team
- 2025-12-12
Who can join
Age: 30 and older, up to 85. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Glaucoma patients eligible for standalone or combined angle intervention surgeries, such as LPI, LPIP, goniosynechialysis, trabeculotomy alone or combined with surgical iridectomy or phacoemulsification and intraocular lens implantation;
- Patients capable of undergoing preoperative examinations including CASIA2-OCT (anterior segment OCT), UBM, slit-lamp gonioscopy, IOL Master (or other optical biometry);
- Patients willing to participate in this study, signing informed consent, and agreeing to follow-up according to the study protocol.
You may not qualify if…
- Patients with severe ocular conditions such as corneal infection, ulcer, trauma, ocular tumors, retinal vascular occlusion, and retinal detachment;
- Those with various types of eye diseases that affect ocular parameter acquisition or interfere with visual field examination;
- Long-term local or systemic use of glucocorticoids;
- Patients with severe systemic diseases;
- Pregnant or lactating women;
- Unable to complete 12-month postoperative follow-up.
Where it is running
- Zhongshan ophthalmic center — Guangzhou, Guangdong, China (enrolling)
Full record on ClinicalTrials.gov
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