An observational study in Glaucoma, sponsored by University of Zurich. Completed at 1 site in Switzerland. Open to participants aged 18 Years to 99 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-09-25.
Sponsored by University of Zurich · Observational
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.
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.
1,818 studies on the registry are indexed under Glaucoma; 231 are open to participants now.
This study's enrollment of 58 is below the median of 103 across 454 observational studies indexed under Glaucoma.
Browse Glaucoma studies →University of Zurich is the lead sponsor of 1,030 studies on the registry; 130 are open to participants now.
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healthy volunteers
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.
Pressure tip or air puff is applied on eye
Comparison of GAT with air tonometry Topcon CT1
Difference in mmHg between these two devices
Time frame: 7 months
Plan to share: No
This study is completed, as verified in Sep 2018. You cannot join it, but the record below documents what was studied.
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University of Zurich