Accuracy of Handheld and Non-contact Tonometry

Benha University

Status: Unknown

Conditions: Glaucoma; Intraocular Pressure; Glaucoma, Suspect

Treatments: Diagnostic Test: Intraocular pressure

Study type: Interventional

Funder types: Other

Identifiers

NCT05352906

RC-10-2022

Details and patient eligibility

About

Monitoring the intraocular pressure (IOP) is one of the most important tests used in follow-up among glaucoma suspects and confirmed glaucomatous patients.

Full description

In tertiary hospitals, IOP screening is an important tool to confirm glaucomatous eyes. Inaccurate measurements may lead to missed diagnosis or false positive results that may affect patients' quality of life.

There are many devices produced to measure IOP, the commonest one is Goldman contact tonometry, the aim of this study is to compare the results of new developed tonometers to the standard applanation tonometer.

Enrollment: 300 estimated patients

Sex: All

Ages: 18 to 80 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• All subjects seeking regular check-up in glaucoma clinic at banha university hospital.
• Glaucoma suspects and glaucomatous patients that visit glaucoma clinic for regular IOP measurements.

Exclusion criteria

• Patients that will refuse to measure IOP again with other devices.
• patients with previous corneal surgeries or scar that may alter the measurements of the tonometer s (as previous keratoplasty, trauma or opacities).

Trial design

Primary purpose: Diagnostic

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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300 participants in 3 patient groups

Contact goldman applanation tonometry

Active Comparator group

Description:

The standard contact tonometer

Treatment:

Diagnostic Test: Intraocular pressure

Handheld digital contact tonometer

Active Comparator group

Description:

A contact digital tonometer's pen.

Treatment:

Diagnostic Test: Intraocular pressure

Non-contact air-puff tonometer

Active Comparator group

Description:

A non-contact tonometer based on air-puff and corneal hysteresis.

Treatment:

Diagnostic Test: Intraocular pressure