NCT07119580Recruiting
Association Between Limbal Function and Tear Proteomics in Chronic Ocular Diseases: Focusing on Glaucoma
Source: ClinicalTrials.gov · Last updated 13 Aug 2025 · Not updated for over 12 months - ask the site whether it is still open
Brief summary (registry, in English)
Background Intact corneal epithelium is important for the defense on the ocular surface, and the function of limbal stem cells is crucial to maintain its integrity. Certain chronic eye diseases, such as glaucoma, require long-term medication use. However, glaucoma patients often exhibit corneal punctate erosions and ocular surface inflammation. In cases where medication has been used for an extended period, patients may even show symptoms similar to limbal stem cell deficiency. Understanding how glaucoma medications affect the function of corneal limbal stem cells is a critical clinical issue. Objectives To evaluate the effect of glaucoma and anti-glaucoma agents on corneal epithelial and limbal epithelial thickness as a surrogate of limbal stem cell function, and to understand the association between tear fluid proteome and limbal function in glaucoma patients. Methods We planned to include 90 subjects with glaucoma, and analyze the absolute thickness and variation of corneal epithelium and limbal epithelium. Tear fluid samples will be collected and proteomic analysis will be performed to elucidate the association between protein. Anticipated Results To elucidate the impact of different types and cumulative doses of glaucoma medications on the thickness of the corneal epithelium and limbal epithelium, and to understand the relationship between limbal function and tear proteomics in glaucoma patients. The expected results may help develop early detection methods for changes in corneal and limbal epithelial function and provide valuable insights for future research on drug design and the protection of limbal stem cells.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 90 (estimated)
- First submitted
- 6 Aug 2025
- Start date
- 8 Jul 2025
- Primary completion date
- Jul 2026
- Lead sponsor
- National Taiwan University Hospital
- Diseases
- Glaucoma, High blood pressure
- NCT number
- NCT07119580
What you commit to
- Study type: Observational
- Planned participants: 90
- From 8 Jul 2025 to the primary completion date, Jul 2026
- 1 site 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 severe ocular trauma, chemical burns, corneal ulcers, Stevens-Johnson syndrome with ocular involvement, or ocular graft-versus-host disease.
- History of corneal surgery, conjunctival surgery, trabeculectomy, or glaucoma drainage device implantation.
- Presence of ocular surface irregularity or limbal dysfunction due to conditions other than glaucoma or dry eye disease.
Who the study is looking for
- Age ≥ 18 years. ii. Healthy Control Group: No diagnosis of glaucoma or ocular hypertension. iii. Glaucoma, Newly Diagnosed Group: Diagnosed with angle-closure glaucoma, open-angle glaucoma, or ocular hypertension; antiglaucoma medication usage for less than 3 months.
- Glaucoma, Long-term Medication Group: Diagnosed with angle-closure glaucoma, open-angle glaucoma, or ocular hypertension; continuous use of intraocular pressure-lowering medications for more than 1 year.
- Glaucoma, Unilateral Group: Diagnosed with unilateral glaucoma or ocular hypertension; only one eye receiving intraocular pressure-lowering treatment.
Age in the registry: 18 years to - · Sex: All · Accepts healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| National Taiwan University Hospital - Hsinchu branch Coordinator of this site? Confirm its status | Hsinchu | Taiwan | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.