Recruiting

TonoVera

Sponsor:

State University of New York at Buffalo

Code:

NCT05523622

Conditions

Glaucoma

Eligibility Criteria

Sex: All

Age: 0+

Healthy Volunteers: Accepted

Interventions

Tono-Vera tonometer

Goldman Applanation Tonometry

Study Details

Brief summary:

We are testing the accuracy of Reichert's Tono-Vera tonometer by comparing measurements of IOP with this device and measurements with other commonly-used tonometers, including Goldmann Applanation and iCare.

Conditions

Glaucoma

Study ID

NCT05523622

Start date

Aug 1, 2022

Status verified date

May, 2026

Completion date

Dec 31, 2027

Anticipated

Primary completion date

Dec 31, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 0+

Healthy Volunteers: Accepted

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.

Study Design

Enrollment

300 participants

Anticipated

Intervention Model

Single group

Primary purpose

Other

Interventions and Outcome Measures

Arms

other: IOP Measurement

These are the measurements of the intraocular pressure.

Interventions

Tono-Vera tonometer

The tonometer measures intraocular pressure with a small rebound probe, similar to those used with other tonometers currently on the market, such as the iCare.

Goldman Applanation Tonometry

This is the current gold standard for measuring eye pressure.

Primary outcome measure

  • Intraocular Pressure [ Time Frame: Baseline only ]

Central Contacts and Locations

Central contacts

Sandra Sieminski, MD

716-408-6909smfernando17@gmail.com

Catherine Seeger, MD

5859443719cseeger2@buffalo.edu

Locations

Ross Eye Institute

Recruiting

Buffalo, New York, United States, 14209

Contacts

Sandra Sieminski, MD

716-881-7900

More Information

Sponsor

State University of New York at Buffalo

Last update posted

May 6, 2026

Last verified

May, 2026

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by State University of New York at Buffalo on 2026-05-06.