New eye pressure gadget put to the test against gold standard
NCT ID NCT05523622
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study is testing a new device called TonoVera to see how well it measures pressure inside the eye compared to current methods. Researchers will enroll 300 adults with glaucoma. The goal is to find out if the new tool is accurate enough for routine use.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could provide a more accurate or easier way to measure eye pressure, helping doctors better manage glaucoma.
- What could go wrong
- This is an early-stage device comparison, not a treatment trial. The new device may not prove more accurate or practical than existing methods.
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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About 300 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2022
- Expected to finish
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Dec 2027
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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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Ability to provide signed and dated informed consent form. Patients willing to comply with all study procedures and be available for the duration of the study. Male or female patients aged 18 to 99 Patients in good general health as evidenced by ability to come to their appointment on day of study. Exclusion Criteria: * Patients age less than 18 years Patients unable or unwilling to provide informed consent to participate in the study Patients for which an accurate tonometry reading cannot be performed. This may include those with blepharospasm (lid squeezers), nystagmus, extensive corneal pathology, or contact lens wearers who cannot remove their contact lens.Patients with significant scleral thinning Patients with a known allergy to proparacaine or fluorescein as these are used to anesthetize and allow measurement respectively of the eye when used with the Goldmann tonometer.
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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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Ross Eye Institute
RECRUITINGBuffalo, New York, 14209, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can exercise shield the eyes of glaucoma patients?
- Can better Follow-Up schedules save sight in glaucoma?
- Portable devices could take the guesswork out of eye pressure checks
- Eye drops may shield the cornea after cataract surgery
- Can a puff of air replace the eye pressure probe?
- New eye scans may catch glaucoma before vision loss