NCT03684174

Non-Contact Air Tonometry (Topcon CT-1®) Versus Goldmann

Non-Contact Air Tonometry (Topcon CT-1®) Versus Goldmann Applanation Tonometry: a Device Comparison Study

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 58 (actual)
• Sponsor: University of Zurich · Academic / Other
• Sex: All
• Age: 18 Years – 99 Years
• Healthy volunteers: Accepted

Summary

In this prospective device comparison study with 58 healthy eyes, the Topcon CT-1® showed statistically significant elevated intraocular pressure measurements compared to the gold standard Goldmann application tonometry.

Detailed description

Introduction: Intraocular pressure (IOP) measurement is crucial in glaucoma diagnosis and treatment. We compared a non-contact air tonometer (Topcon CT-1®) with the gold standard Goldmann Applikation tonometer (GAT). Methods: In this prospective, mono centric device comparison study, only healthy eyes were enrolled. IOP was measured three times with the Topcon CT-1® followed by three times GAT. Mean IOP was calculated and compared with a paired t-test, a linear regression and a Bland-Altman analysis.

Conditions

• Glaucoma

Interventions

Type	Name	Description
DEVICE	Intraocular pressure measurement	Pressure tip or air puff is applied on eye

Timeline

• Start date: 2017-04-01
• Primary completion: 2017-10-31
• Completion: 2017-10-31
• First posted: 2018-09-25
• Last updated: 2018-09-25

Locations

1 site across 1 country: Switzerland

Regulatory

• FDA-regulated device study