iCare vs Tonopen vs Goldmann Applanation Post-vitrectomy Surgery

Duke University

Status

Completed

Conditions

Intraocular Pressure

Treatments

Device: Tonopen applanation

Device: Goldmann applanation

Device: Icare rebound tonometry

Study type

Interventional

Funder types

Other

Identifiers

NCT01786954

Pro00036498

Details and patient eligibility

About

The purpose of the study is to compare the measurement of pressure inside the eye using three different FDA-approved devices (Icare, Tonopen, and Goldmann applanation).

Full description

The three above devices will be used to measure intraocular pressure in patients one day following vitreoretinal surgery. The underlying reason for surgery is not being considered in this study. The measured pressures will be compared across devices in eyes filled with fluid, gas, and silicone oil.

Enrollment

68 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Duke Eye Center patients 18 years or older
capacity to give legally effective consent
scheduled to undergo vitreoretinal surgery

Exclusion criteria

individuals unable to give consent
minors

Trial design

Primary purpose

Diagnostic

Allocation

Randomized

Interventional model

Crossover Assignment

Masking

None (Open label)

68 participants in 2 patient groups

Icare then Goldmann then Tonopen

Experimental group

Description:

Enrolled patients will be subjected to intraocular pressure measurement using Icare rebound tonometry, Tonopen applanation, and Goldmann applanation. Patients receive Icare first and then are randomized to receive Tonopen followed by Goldmann OR Goldmann followed by Tonopen. This arm is Icare then Goldmann then Tonopen.

Treatment:

Device: Icare rebound tonometry

Device: Goldmann applanation

Device: Tonopen applanation

Icare then Tonopen then Goldmann

Experimental group

Description:

Treatment:

Device: Icare rebound tonometry

Device: Goldmann applanation

Device: Tonopen applanation