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

Completed

• Conditions: Glaucoma

• Registration Number: NCT03684174
• Lead Sponsor: University of Zurich

Brief 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.

Study Timeline

• Study Start: 2017-04-01
• Primary Completion: 2017-10-31
• Study Completion: 2017-10-31
• Status Verified: 2018-09
• Study First Submitted: 2018-09-17
• Study First Submitted QC: 2018-09-24
• Last Update Submitted: 2018-09-24
• Study First Posted: 2018-09-25
• Last Update Posted: 2018-09-25

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 58

Inclusion Criteria

Healthy volunteers who agreed to be included in the study and were able to comply with the measurement procedures

Exclusion criteria were cor-neal abnormalities (such as oedema, scars or dystrophies, astigmatism,hyperopia or myopia > 3 dioptres), a history of ocular surgery or recent(<47 weeks) ocular disorder.

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Comparison of GAT with air tonometry Topcon CT1	7 months	Difference in mmHg between these two devices

Trial Locations

Locations (1)

Augenpraxis Centerpassage; 🇨🇭 Wettingen, AG, Switzerland