Influence of Discordant Intraocular Eye Pressure Readings Taken by Dynamic Contour Tonometry and Goldmann Applanation Tonometry

This study is ongoing, but not recruiting participants.
Sponsor:
Information provided by (Responsible Party):
University of Zurich
ClinicalTrials.gov Identifier:
NCT01474070
First received: November 3, 2011
Last updated: November 14, 2011
Last verified: November 2011

November 3, 2011
November 14, 2011
November 2011
December 2012   (final data collection date for primary outcome measure)
Intraocular pressure (IOP) [ Time Frame: IOP is measured at the only study visit ] [ Designated as safety issue: No ]
IOP is measured with goldman-applanation tonometer and dynamic-contour-tonometer at the only study visit (V0)
Same as current
Complete list of historical versions of study NCT01474070 on ClinicalTrials.gov Archive Site
Demographical and clinical data [ Time Frame: study visit V0 ] [ Designated as safety issue: No ]
Age, axial length of the eye, central corneal thickness
Same as current
Not Provided
Not Provided
 
Influence of Discordant Intraocular Eye Pressure Readings Taken by Dynamic Contour Tonometry and Goldmann Applanation Tonometry
Not Provided

IOP is measured with two devices (Dynamic Contour Tonometry (DCT) and Goldmann applanation tonometry (GAT)). DCT reading will be compared to a corrected GAT reading by the formula of Elsheikh, Alhasso and Pye.

  • Trial with medical device
Not Provided
Observational
Observational Model: Cohort
Time Perspective: Prospective
Not Provided
Not Provided
Non-Probability Sample

glaucoma patients

Glaucoma
Device: Intraocular Pressure Measurement
Intraocular pressure is messured with goldmann applanation tonometer (GAT) and with the dynamic contour tonometer (DCT)
Other Names:
  • GAT: Haag-Streit AG, Gartenstadtstrasse 10, 3098 Koeniz, Switzerland
  • DCT: Ziemer Ophthalmic Systems AG, Allmendstrasse 11, 2562 Port, Switzerland
Not Provided
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Active, not recruiting
102
Not Provided
December 2012   (final data collection date for primary outcome measure)

Inclusion criteria:

  • clinical diagnosis of glaucoma

Exclusion criteria:

  • other optic neuropathy other then glaucoma
  • age<18
  • corneal surgery
  • use of contact lenses
Both
18 Years and older
No
Contact information is only displayed when the study is recruiting subjects
Switzerland
 
NCT01474070
GAT-DCT-Vergleich
Not Provided
University of Zurich
University of Zurich
Not Provided
Principal Investigator: Christoph Kniestedt, Ass. Prof., MD University Hospital Zurich, Ophthalmic Clinic
University of Zurich
November 2011

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP