Dry eye sufferers: are preservatives in your eye drops making things worse?
NCT ID NCT07635849
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two types of artificial tears for dry eye disease: one with preservatives and one without. Researchers want to see which is safer and more effective over 8 weeks. About 80 adults with dry eye will take part, and neither they nor their doctors will know which type they receive. The goal is to find out if preservative-free drops are a better choice for long-term use.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 80 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jul 2026
An estimate. Start dates often move.
- Expected to finish
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Mar 2027
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age ≥18 years * Clinical diagnosis of Dry Eye Disease (OSDI \>13 and TBUT \<10 seconds) * Willingness to provide written informed consent Exclusion Criteria: * Contact lens use * Active ocular infection or inflammation * History of ocular surgery within the past 6 months * Use of systemic immunosuppressive therapy
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Pokhara Academy of Health Sciences
Pokhara, Gandaki, 33700, Nepal
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a Light-Based scan reveal the health of your eyes?
- Can acne drug harm the eyes? new study investigates
- Which eye drop wins the dry eye battle? a Head-to-Head test
- Can a new eye drop soothe dry eye? a trial puts TRYPTYR to the test