Goldmann Applanation Tonometry, Dynamic Contour Tonometry, and Corvis ST Tonometer

NCT ID: NCT02624427

Last Updated: 2017-06-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

109 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-12-31

Study Completion Date

2016-11-30

Brief Summary

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The study is investigating Intra ocular pressure (IOP) by Goldmann Applanation Tonometry, Dynamic Contour Tonometry, and the Corvis ST tonometer.

Detailed Description

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The aim of the study is to approach the "true" Intra ocular pressure (IOP) by correlating the difference between IOP by Goldmann Applanation Tonometry to the IOP by Dynamic Contour Tonometry to the biomechanical parameters of the cornea measured by Corvis ST. Therefore the investigators gain new findings about the influence of the biomechanical corneal parameters on the IOP. In order to do so the investigators want to examine 50 Glaucoma eyes and 50 non-Glaucoma Eyes with Goldmann Applanation Tonometry, Dynamic Contour Tonometry, and Corvis ST.

Conditions

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Glaucoma

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Glaucoma Eyes

Measurement of intraocular pressure (IOP)

Group Type EXPERIMENTAL

Measurement of intraocular pressure (IOP)

Intervention Type DEVICE

Measurement of IOP with the following devices: (1) Goldmann tonometer, (2) Dynamic Contour tonometer, and (3) Corvis ST tonometer

Healthy Eyes

age-matched healthy eyes as controls will undergo Measurement of intraocular pressure (IOP)

Group Type ACTIVE_COMPARATOR

Measurement of intraocular pressure (IOP)

Intervention Type DEVICE

Measurement of IOP with the following devices: (1) Goldmann tonometer, (2) Dynamic Contour tonometer, and (3) Corvis ST tonometer

Interventions

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Measurement of intraocular pressure (IOP)

Measurement of IOP with the following devices: (1) Goldmann tonometer, (2) Dynamic Contour tonometer, and (3) Corvis ST tonometer

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* diagnosis of glaucoma
* 18 years old or older with no upper limit


* no diagnosis of glaucoma
* 18 years old or older with no upper limit

Exclusion Criteria

* IOP lowering surgery within the last 3 weeks
* any corneal surgery in the past
* bad fixation
* insufficient measurement quality with any of the study devices


* any diagnosis of glaucoma
* IOP lowering surgery within the last 3 weeks
* any corneal surgery in the past
* bad fixation
* insufficient measurement quality with any of the study devices
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Zurich

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jens Funk, MD PhD

Role: PRINCIPAL_INVESTIGATOR

UniversityHospital of Zurich, Zurich, Switzerland

Related Links

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http://www.usz.ch

Study Center

Other Identifiers

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Corvis and DCT vs. GAT

Identifier Type: -

Identifier Source: org_study_id

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