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Can a new scale give voice to pain in the blind?

NCT ID NCT03968991

Diagnosis Sponsor: University Hospital, Clermont-Ferrand Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 Aug 07, 2026 · Last updated Aug 07, 2026

Summary

This study tests whether a new tool, the VISIODOL® scale, can help people with visual impairment communicate pain. Researchers will compare pain ratings from this scale with those from a standard numerical scale during heat-induced pain. The study includes healthy volunteers with and without visual impairment, aiming to see if the scale is a reliable way to assess pain in this population.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
VISIODOL® scale (a diagnostic tool for pain assessment)
What this could lead to
If validated, this scale could give people with visual impairment a reliable way to express pain, improving their care and comfort.
What could go wrong
The study is small and early, so the scale may not prove accurate or widely applicable. It also relies on thermal tests, which may not reflect all types of pain.

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

37 people

The number who actually took part.

Started

Jun 2019

Finished

Dec 2020

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

18 to 60 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Healthy volunteers * Subjects aged over 18 / under 60 * Male or female * Subjects fasting from coffee, tea, Coca-Cola and others stimulants * Sufficient understanding and cooperation to comply with the study requirements * Agreed to provide written consent * Affiliated to the social security * Subjects with visual impairment (congenital or acquired) * Subjects with no visual impairment (healthy group) Exclusion Criteria: * Subjects under 18 years old * Administrative and legal criteria (tutorship, curatorship, without social security, in exclusion period of another study)

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Conditions

The condition(s) this trial relates to.

blindness (disorder) vision disorder

As listed by the trial registrant

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

Acquired blindness Congenital blindness Visual deficiency

Contacts and locations

Locations

  • Chu Clermont Ferrand

    Clermont-Ferrand, 63003, France