Intra-observer and Inter-observer Variability With Dynamic Contour Tonometry.

May 11, 2016 updated by: Yale University
The aim of the protocol is to document intra-observer and inter-observer variability with dynamic contour tonometry, and will also test the theory that pulse amplitude, as measured by dynamic contour tonometry, is correlated with the difference in systolic and diastolic blood pressures.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Study Type

Observational

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Connecticut
      • New Haven, Connecticut, United States, 06510
        • Yale Eye Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Healthy, competent adults with normal, healthy eyes.

Description

Inclusion Criteria:

  • Normal, healthy eyes
  • Minimal to moderate refractive error
  • Willingness to participate in the study

Exclusion Criteria:

  • Diagnosis of any type of glaucoma
  • Any prior ocular surgery
  • Any prior ocular trauma
  • Any known anterior segment pathology

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Observation
Variability will be assessed between each examiner.
Device: Dynamic contour tonometry
Observe variability of measurements by dynamic contour tonometry
Other Names:
  • PASCAL tonometry
  • DCT

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
The variability of intraocular pressure measurements using dynamic contour tonometry
Time Frame: Same day
Same day

Secondary Outcome Measures

Outcome Measure
Time Frame
Observe how pulse amplitude, as measured by dynamic contour tonometry, correlates with the difference in systolic and diastolic blood pressures
Time Frame: Same day
Same day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Yale University

Investigators

  • Principal Investigator: Hylton R Mayer, MD, Yale University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2009

Study Registration Dates

First Submitted

November 18, 2008

First Submitted That Met QC Criteria

January 6, 2009

First Posted (Estimate)

January 7, 2009

Study Record Updates

Last Update Posted (Estimate)

May 13, 2016

Last Update Submitted That Met QC Criteria

May 11, 2016

Last Verified

May 1, 2016

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 0601001047

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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