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Completed

NCT Number: NCT03684174

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

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.

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Key information

Conditions

Glaucoma Eye Diseases Ocular Hypertension

Age range

18 year–99 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Augenpraxis Centerpassage

Wettingen, Canton of Aargau, 5430, Switzerland

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Intraocular pressure measurement

Device

Pressure tip or air puff is applied on eye

Primary outcomes

  1. Comparison of GAT with air tonometry Topcon CT1

    Time frame: 7 months

    Difference in mmHg between these two devices

Sponsors and collaborators

Lead sponsor

University of Zurich

Other

Registry information

Official study title

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

Important dates

Study start
2017
Primary completion
2017
Study completion
2017
First posted
Sep 25, 2018
Registry last updated
Sep 25, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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