Can a gentle tap replace the Eye-Pressure gold standard?
NCT ID NCT05147610
First seen Aug 07, 2026 · Last updated Aug 07, 2026
Summary
This trial tests whether the Icare200, a handheld rebound tonometer, measures eye pressure as accurately as the Goldmann applanation tonometer, the current gold standard. Adults needing eye-pressure checks will have their pressure measured with both devices, plus an air-puff tonometer, to see how well the results agree. The study also looks at how corneal thickness, body mass index, and patient stress affect readings. If the Icare200 proves reliable, it could make eye-pressure screening easier for people who have difficulty with traditional methods.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Icare200 rebound tonometer (a handheld device that measures eye pressure by gently tapping the cornea)
- What this could lead to
- If the Icare200 proves as accurate as the gold-standard test, it could make eye-pressure screening easier and more accessible, especially for people who struggle with traditional methods.
- What could go wrong
- This is a diagnostic accuracy study, not a treatment trial. The Icare200 may not match the gold standard closely enough, and results may not apply to all patients or settings.
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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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
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171 people
The number who actually took part.
- Started
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Dec 2021
- Finished
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Jul 2022
- 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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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: * Adult man ou woman who consults in ophthalmology for a reason justifying an IOP measurement * Able to give informed consent * Being affiliated with a social security system Exclusion Criteria: * Participants who are unable to have IOP measured by Goldmann Tonometry * Participants who are unable to have IOP measured by air puff Tonometry * Age younger than 18 years * Inability to sit * Corneal ulcer * Refractive surgery * Corneal Astigmatism \>3D * Participants who wear contact lenses * Pregnancy * Unable to give consent
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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.
Contacts and locations
Locations
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CHU de Clermont-Ferrand
Clermont-Ferrand, 63000, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.