Intraocular Pressure Accuracy and Variability of the Barraquer Tonometer

May 6, 2008 updated by: Barnes Retina Institute

Study to Compare the Accuracy and Variability of the Barraquer Tonometer With Other Methods of Tonometry

To determine if the Barraquer tonometer provides an accurate and reliable measurement of intraocular pressure. The Barraquer tonometer is a device used to safely and painlessly measure intraocular pressure.

Study Overview

Status

Unknown

Intervention / Treatment

Detailed Description

Intraocular pressure will be checked using four different methods of tonometry. These four methods will include Tonopen, Goldmann applanation tonometry, Schiotz tonometry, and Barraquer tonometer. The data will then be compared to determine the reliability and accuracy of the Barraquer tonometer.

Study Type

Interventional

Enrollment (Anticipated)

300

Phase

  • Not Applicable

Contacts and Locations

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

Study Contact

Study Locations

    • Missouri
      • St. Louis, Missouri, United States, 63110
        • Recruiting
        • Washington University School of Medicine and Barnes Jewish Hospital
        • Contact:
          • Pam Light
          • Phone Number: 2287 314-367-1278
        • Sub-Investigator:
          • Arghavan Almony, MD
        • Sub-Investigator:
          • Rajiv Rathod, MD

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

Description

Inclusion Criteria:

  1. All patients of Barnes Retina Institute who are scheduled to undergo vitreoretinal surgery.
  2. All patients scheduled for routine eye examination at the Washington University Eye Clinic or Barnes Jewish Eye Clinic.
  3. All ages (patients seen at these locations are adult patients >18 years of age).

Exclusion Criteria:

  1. Any patient who is seen in the outpatient clinics for an urgent or emergency ophthalmological issue.
  2. Any patient who has a contraindication to routine, noninvasive methods of tonometry and/or pachymetry (ie corneal ulcer).

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

  • Primary Purpose: DIAGNOSTIC
  • Allocation: NON_RANDOMIZED
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Central corneal thickness as measured by pachymetry
Time Frame: at time of measurement
at time of measurement
Intraocular pressure as measured by Schiotz tonometer
Time Frame: at time of measurement
at time of measurement
Tonopen
Time Frame: at time of measurement
at time of measurement
Barraquer tonometer
Time Frame: at time of measurement
at time of measurement
and Perkins tonometer
Time Frame: at time of measurement
at time of measurement

Collaborators and Investigators

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

Investigators

  • Principal Investigator: Gilbert Grand, MD, Washington University School of Medicine and Barnes Retina Institute

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

November 1, 2006

Primary Completion (ANTICIPATED)

November 1, 2008

Study Completion (ANTICIPATED)

November 1, 2008

Study Registration Dates

First Submitted

December 8, 2006

First Submitted That Met QC Criteria

December 8, 2006

First Posted (ESTIMATE)

December 11, 2006

Study Record Updates

Last Update Posted (ESTIMATE)

May 9, 2008

Last Update Submitted That Met QC Criteria

May 6, 2008

Last Verified

May 1, 2008

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • BRI 06-0987

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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