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Automated Applanation Tonometry - Updated
Sponsor: Duke University
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.
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
200
Start Date
2026-03-02
Completion Date
2026-12-29
Last Updated
2026-03-06
Healthy Volunteers
No
Conditions
Interventions
Standard GAT
Standard Goldmann Applanation Tonometry (GAT): this is the standard method for IOP measurement in clinical practice
Fixed force GAT
An investigational device similar to standard GAT
Upright applanating prototype
An investigational device, prism used in standard and fixed-force GAT is attached to a portable device
Pneumotonometer
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
Locations (1)
Duke Eye Center
Durham, North Carolina, United States