New eye drop could ease severe allergy symptoms in kids and adults
NCT ID NCT06903884
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether adding diquafosol eye drops to standard treatment helps people with moderate-to-severe vernal keratoconjunctivitis (a serious eye allergy). About 94 participants aged 6 and older will receive either diquafosol plus cyclosporine or cyclosporine alone. Researchers will check eye health, symptoms, and quality of life over 16 weeks.
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 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 94 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
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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6 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.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Subject at least aged 6 and above * Clinical diagnosis of vernal keratoconjunctivitis * Evidence of active moderate-to-severe disease: At least Grade 2 on the Bonini scale of VKC clinical presentation (moderate-to-severe) \[38\]. * Evidence of keratitis: At least Grade 1 on the Modified Oxford scale for cornea fluorescein staining as reported by Bron et al \[39\]. * Experienced 1 or more recurrences of VKC during the previous year Exclusion Criteria: * Nasolacrimal duct obstruction * Impaired blinking function * Active ocular infection or history of ocular herpes, varicella zoster or vaccinia virus infection * Any ocular disease that would require topical ocular treatment during the study * Use of cyclosporin A or tacrolimus eyedrops, or use of systemic immunosuppressants within 3 months before enrolment * Any ocular surgery within 6 months before enrolment
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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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HKU Eye Centre
RECRUITINGHong Kong, Hong Kong