An interventional study of Measurement of intraocular pressure (IOP) in Glaucoma, sponsored by University of Zurich. Completed. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-06-21.
Sponsored by University of Zurich · Not applicable, Interventional, and Diagnostic
The study is investigating Intra ocular pressure (IOP) by Goldmann Applanation Tonometry, Dynamic Contour Tonometry, and the Corvis ST tonometer.
The aim of the study is to approach the "true" Intra ocular pressure (IOP) by correlating the difference between IOP by Goldmann Applanation Tonometry to the IOP by Dynamic Contour Tonometry to the biomechanical parameters of the cornea measured by Corvis ST. Therefore the investigators gain new findings about the influence of the biomechanical corneal parameters on the IOP. In order to do so the investigators want to examine 50 Glaucoma eyes and 50 non-Glaucoma Eyes with Goldmann Applanation Tonometry, Dynamic Contour Tonometry, and Corvis ST.
1,818 studies on the registry are indexed under Glaucoma; 231 are open to participants now.
This study's enrollment of 109 is above the median of 65 across 1,272 interventional 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.
Counted across the registry records on this site, refreshed daily.
Inclusion Criteria for the glaucoma group:
Exclusion Criteria for the glaucoma group:
Inclusion Criteria for the healthy control group:
Exclusion Criteria for the healthy control group:
Measurement of intraocular pressure (IOP)
Device: Measurement of intraocular pressure (IOP)
age-matched healthy eyes as controls will undergo Measurement of intraocular pressure (IOP)
Device: Measurement of intraocular pressure (IOP)
Measurement of IOP with the following devices: (1) Goldmann tonometer, (2) Dynamic Contour tonometer, and (3) Corvis ST tonometer
Delta IOP
IOP difference of Goldmann tonometer and Dynamic Contour tonometer
Time frame: baseline
Correlation of IOP difference of Goldmann tonometer and Dynamic Contour tonometer with biomechanical corneal properties measured by Corvis ST tonometer
Corvis ST has an integrated high-speed Scheimpflug camera which records images on which basis the biomechanical corneal parameter are analyzed (corneal thickness in micrometers, corneal applications in millimeters, peak distance in millimeters, radius in millimeters, and deformation amplitude in millimeters). Those biomechanical parameters of the cornea will be correlated to the difference of the IOP measured by GAT and by DCT (GAT - DCT).
Time frame: baseline
No study locations are listed for this record.
Plan to share: No
This study is completed, as verified in Jun 2017. You cannot join it, but the record below documents what was studied.
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University of Zurich