Condition
Primary Acquired Nasolacrimal Duct Obstruction clinical trials and research
As of November 12, 2026, Find a Trial lists 2 Primary Acquired Nasolacrimal Duct Obstruction clinical trials that are recruiting, at sites in 2 countries (most in Taiwan (1), China (1)). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 2Clinical trials
- 2Countries
All recruiting trials (2)
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Four- versus two-point balloon dacryoplasty for blocked tear ducts
This will see if using four inflation points instead of two during balloon dacryoplasty helps people with primary acquired nasolacrimal duct obstruction get better tear drainage.
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Adding 5‑Fluorouracil to endoscopic DCR for blocked tear ducts with a small lacrimal sac
This trial will test whether using 5‑fluorouracil during endoscopic dacryocystorhinostomy helps adults with primary acquired nasolacrimal duct obstruction and a small lacrimal sac have better outcomes.
Quick answers
How many Primary Acquired Nasolacrimal Duct Obstruction clinical trials are recruiting right now?
2, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 2 countries. The most sites are in Taiwan (1 trial), China (1 trial). Each study page lists its sites and which ones are recruiting.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.