Non-Contact Air Tonometry (Topcon CT-1®) Versus Goldmann

University of Zurich (UZH)

Status: Completed

Conditions: Glaucoma

Treatments: Device: Intraocular pressure measurement

Study type: Observational

Funder types: Other

Identifiers

NCT03684174

2018-00136

Details and patient eligibility

About

In this prospective device comparison study with 58 healthy eyes, the Topcon CT-1® showed statistically significant elevated intraocular pressure measurements compared to the gold standard Goldmann application tonometry.

Full description

Introduction:

Intraocular pressure (IOP) measurement is crucial in glaucoma diagnosis and treatment. We compared a non-contact air tonometer (Topcon CT-1®) with the gold standard Goldmann Applikation tonometer (GAT).

Methods:

In this prospective, mono centric device comparison study, only healthy eyes were enrolled. IOP was measured three times with the Topcon CT-1® followed by three times GAT. Mean IOP was calculated and compared with a paired t-test, a linear regression and a Bland-Altman analysis.

Enrollment: 58 patients

Sex: All

Ages: 18 to 99 years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria:

Healthy volunteers who agreed to be included in the study and were able to comply with the measurement procedures

Exclusion criteria were cor-neal abnormalities (such as oedema, scars or dystrophies, astigmatism,hyperopia or myopia > 3 dioptres), a history of ocular surgery or recent(<47 weeks) ocular disorder.