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Intraocular Pressure Accuracy and Variability of the Barraquer Tonometer

Primary Purpose

Elevated Intraocular Pressure

Status

Unknown status

Phase

Not Applicable

Locations

United States

Study Type

Interventional

Intervention

Barraquer tonometer

About this trial

This is an interventional diagnostic trial for Elevated Intraocular Pressure focused on measuring Barraquer tonometer, Intraocular pressure, Tonometry

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

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

Exclusion Criteria:

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

Sites / Locations

Washington University School of Medicine and Barnes Jewish HospitalRecruiting

Outcomes

Primary Outcome Measures

Central corneal thickness as measured by pachymetry

Intraocular pressure as measured by Schiotz tonometer

Tonopen

Barraquer tonometer

and Perkins tonometer

Secondary Outcome Measures

Full Information

NCT ID

NCT00409669

First Posted

December 8, 2006

Last Updated

May 6, 2008

Sponsor

Barnes Retina Institute

1. Study Identification

Unique Protocol Identification Number

NCT00409669

Brief Title

Intraocular Pressure Accuracy and Variability of the Barraquer Tonometer

Official Title

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

Study Type

Interventional

2. Study Status

Record Verification Date

May 2008

Overall Recruitment Status

Unknown status

Study Start Date

November 2006 (undefined)

Primary Completion Date

November 2008 (Anticipated)

Study Completion Date

November 2008 (Anticipated)

3. Sponsor/Collaborators

Name of the Sponsor

Barnes Retina Institute

4. Oversight

5. Study Description

Brief Summary

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.

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.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study

Elevated Intraocular Pressure

Keywords

Barraquer tonometer, Intraocular pressure, Tonometry

7. Study Design

Primary Purpose

Diagnostic

Study Phase

Not Applicable

Interventional Study Model

Single Group Assignment

Masking

None (Open Label)

Allocation

Non-Randomized

Enrollment

300 (Anticipated)

8. Arms, Groups, and Interventions

Intervention Type

Device

Intervention Name(s)

Barraquer tonometer

Intervention Description

barraquer tonometer

Primary Outcome Measure Information:

Title

Central corneal thickness as measured by pachymetry

Time Frame

at time of measurement

Title

Intraocular pressure as measured by Schiotz tonometer

Time Frame

at time of measurement

Title

Tonopen

Time Frame

at time of measurement

Title

Barraquer tonometer

Time Frame

at time of measurement

Title

and Perkins tonometer

Time Frame

at time of measurement

10. Eligibility

Sex

All

Minimum Age & Unit of Time

18 Years

Accepts Healthy Volunteers

Eligibility Criteria

Inclusion Criteria: All patients of Barnes Retina Institute who are scheduled to undergo vitreoretinal surgery. All patients scheduled for routine eye examination at the Washington University Eye Clinic or Barnes Jewish Eye Clinic. All ages (patients seen at these locations are adult patients >18 years of age). Exclusion Criteria: Any patient who is seen in the outpatient clinics for an urgent or emergency ophthalmological issue. Any patient who has a contraindication to routine, noninvasive methods of tonometry and/or pachymetry (ie corneal ulcer).

Central Contact Person:

First Name & Middle Initial & Last Name or Official Title & Degree

Arghavan Almony, MD

Phone

314 367 1278

Ext

2287

almony@vision.wustl.edu

Overall Study Officials:

First Name & Middle Initial & Last Name & Degree

Gilbert Grand, MD

Organizational Affiliation

Washington University School of Medicine and Barnes Retina Institute

Official's Role

Principal Investigator

Facility Information:

Facility Name

Washington University School of Medicine and Barnes Jewish Hospital

City

St. Louis

State/Province

Missouri

ZIP/Postal Code

63110

Country

United States

Individual Site Status

Recruiting

Facility Contact:

First Name & Middle Initial & Last Name & Degree

Pam Light

Phone

314-367-1278

Ext

2287

First Name & Middle Initial & Last Name & Degree

Arghavan Almony, MD

First Name & Middle Initial & Last Name & Degree

Rajiv Rathod, MD

12. IPD Sharing Statement

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Intraocular Pressure Accuracy and Variability of the Barraquer Tonometer

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