Intraocular Pressure Accuracy and Variability of the Barraquer Tonometer

Elevated Intraocular Pressure Clinical Trial

Official title:

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

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT00409669
• Other study ID #: BRI 06-0987
• Status: Recruiting
• Phase: N/A
• First received: December 8, 2006
• Last updated: May 6, 2008
• Start date: November 2006
• Est. completion date: November 2008

Study information

• Verified date: May 2008
• Source: Barnes Retina Institute
• Contact: Arghavan Almony, MD
• Phone: 314 367 1278
• Email: almony[@]vision.wustl.edu
• Is FDA regulated: No
• Health authority: United States: Institutional Review Board
• Study type: Interventional

Clinical Trial 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.

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.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 300
• Est. completion date: November 2008
• Est. primary completion date: November 2008
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: 18 Years and older

Eligibility

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 Design

Allocation: Non-Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic

Related Conditions & MeSH terms

• Elevated Intraocular Pressure
• Glaucoma

Intervention

Device:
• Barraquer tonometer
barraquer tonometer

Locations

Country	Name	City	State
United States	Washington University School of Medicine and Barnes Jewish Hospital	St. Louis	Missouri

Sponsors (1)

Lead Sponsor	Collaborator
Barnes Retina Institute

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Central corneal thickness as measured by pachymetry		at time of measurement	No
Primary	Intraocular pressure as measured by Schiotz tonometer		at time of measurement	No
Primary	Tonopen		at time of measurement	No
Primary	Barraquer tonometer		at time of measurement	No
Primary	and Perkins tonometer		at time of measurement	No