Could light and sound replace the air puff eye test?
NCT ID NCT07762053
First seen Aug 13, 2026 · Last updated Sep 11, 2026 · Updated 3 times
Summary
This trial evaluates a new device called the Photobionic IOP Tonometer (PIB) that measures eye pressure without touching the eye or using an air puff. It uses a low-power infrared light and a gentle sound to detect tiny movements on the eye's surface, which a computer analyzes to estimate pressure. The study involves 15 adults with or without glaucoma, comparing PIB readings to the standard Goldmann applanation tonometer (GAT) to check repeatability and safety. The goal is to see if this method could offer a faster, more comfortable, and potentially home-based way to monitor eye pressure.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Photobionic IOP Tonometer (PIB) - a non-contact device using infrared light and sound waves to measure eye pressure
- What this could lead to
- If successful, this could lead to a painless, touch-free way to measure eye pressure at home, improving glaucoma monitoring and access to care.
- What could go wrong
- This is a small early study focused on repeatability, not accuracy. The device is investigational and not yet FDA-approved, and results may not confirm it works as intended.
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 15 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2026
- Expected to finish
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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
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 to 100 years
- 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: 1. Subject is a female or male; 2. Subject is with or without a prior glaucoma diagnosis; 3. Subject is 18 years or older; 4. Subject is willing and able to sign an informed consent; 5. Subjects considered to be vulnerable (i.e. individuals with impaired consent capacity and/or lack or loss of autonomy on the condition that written consent is provided by a legally authorized representative. Exclusion Criteria: 1. Subjects who are prisoners 2. Subject refuses or is unable to sign the informed consent; 3. Subjects with only one functional eye; 4. Those with poor or eccentric fixation in one or both eyes; 5. Those with corneal scarring or who have had corneal surgery including corneal laser surgery; 6. Those with a history of incisional glaucoma or incisional retinal surgery; 7. Microphthalmos; 8. Buphthalmos; 9. Contact lens use within the last three months; 10. Symptoms of Dry Eye Syndrome and signs of dry eye on examination of cornea; 11. Known history of difficulty in obtaining GAT IOP measurements; 12. Lid squeezers or blepharospasm; 13. Nystagmus; 14. Keratoconus; 15. Any corneal or conjunctival pathology or infection; 16. Any conjunctival thickening or opacification that reduces the clear view to the sclera; 17. Central corneal thickness greater than 0.600 mm or less than 0.500 mm (2 standard deviations about the human mean); 18. Cataract Extraction within the last three months.
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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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Acuity Eye Group
La Quinta, California, 92253-9508, United States