RecruitingNot ApplicableNCT07298356

Automated Applanation Tonometry - Updated

Sponsor

Duke University

Enrollment

200 participants

Start Date

Mar 2, 2026

Study Type

INTERVENTIONAL

Conditions

Glaucoma Glaucoma, Suspect

Summary

Goldmann Applanation Tonometry (GAT) is considered the clinical gold standard for eye pressure measurements and yet it is known to be a subjective measurement with limited repeatability and limited portability. Another clinical standard for checking eye pressure is known as the pneumotonometer. This method is more objective but not portable. The purpose of this study is to develop new methods of measuring eye pressure that are more objective, reproducible and portable. In this study, the investigators will be comparing the eye pressure measurements using 2 investigational methods to GAT and pneuumotonometer.

Eligibility

Min Age: 18 Years

Plain Language Summary

Simplified for easier understanding

This study tests an automated eye pressure measurement device (applanation tonometer) on adults coming in for a routine eye exam, to assess how accurately and reliably it measures eye pressure compared to standard methods. **You may be eligible if...** - You are 18 or older - You are attending a routine eye examination - You are willing and able to give consent **You may NOT be eligible if...** - You have a history of corneal scarring - You have an active eye infection - You have had recent trauma or injury to the surface of your eye Talk to your doctor to see if this trial is right for you.

This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

DEVICEStandard GAT

Standard Goldmann Applanation Tonometry (GAT): this is the standard method for IOP measurement in clinical practice

DEVICEFixed force GAT

An investigational device similar to standard GAT

DEVICEUpright applanating prototype

An investigational device, prism used in standard and fixed-force GAT is attached to a portable device

DEVICEPneumotonometer

This is a standard for checking eye pressure. A topical anesthetic (numbing agent). A probe will touch the front of the eye while the machine measures the eye pressure