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Eye drops from cord blood could soothe nerve pain

NCT ID NCT07566806

Symptom relief Sponsor: Singapore Eye Research Institute Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether eye drops made from cord blood plasma can reduce pain in people with long-term nerve-related eye pain. Twenty adults with persistent eye pain and abnormal corneal nerves will receive the drops. Researchers will measure pain levels and nerve health to see if the treatment works.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 20 people

The number the study aims to enrol. It can still change while the study runs.

Started

Sep 2023

Expected to finish

Sep 2027

An estimate. End dates often move.

Lead sponsor

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

21 years and older

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Persistent ocular pain or pain-like symptoms, including burning sensation, allodynia, photoallodynia, stinging, hyperalgesia, throbbing, shooting, sharp, cramping, gnawing, or a feeling of electric shock, with a minimum score of 30% for more than 3 questions in the OPAS questionnaire (see below section for OPAS questionnaire), for at least 3 months; 2. Presence of corneal nerve abnormalities, including microneuromas, beading, nerve tortuosity, decreased in corneal nerve fiber density (CNFD) or corneal nerve fiber length (CNFL), on IVCM images; 3. Minimal or no ocular surface fluorescein staining, with the National Eye Institute (NEI) and ocular surface Oxford score \<2; 4. Patients who will receive cord plasma eye drops treatment Exclusion Criteria: 1. Presence of active ocular surface diseases, such as active infective keratitis, the presence of epithelial defect or any other conditions that may cause nociceptive pain 2. Active anterior or posterior blepharitis; 3. Presence of concomitant ocular diseases that may cause ocular pain, such as uveitis or other ocular inflammatory diseases; 4. Concurrent treatment with immunosuppressants, such as topical cyclosporin or steroid eye drops 5. Concurrent use of oral Nonsteroidal anti-inflammatory drugs (NSAID) or other medications that may affect the pain scores

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Conditions

The condition(s) this trial relates to.

corneal disorder neuralgia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Corneal disease Neuropathic pain

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Singapore Eye Research Institute

    RECRUITING

    Singapore, Singapore, 169856, Singapore

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