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Evaluation of Corvis tonometer in healthy subjects and patients with ocular hypertension and glaucoma

Poster Details

First Author: I.Halkiadakis GREECE

Co Author(s):    O. Zelou   P. Ginalas   E. Patsea   S. Skouriotis           

Abstract Details


To evaluate the agreement of intraocular pressure (IOP) and central corneal thickness (CCT) measurements obtained with the non-contact tonometer Corvis Scheimpflug Technology (Corvis ST, OCULUS, Wetzlar, Germany) versus Goldmann applanation tonometry (GAT) and optical -based corneal pachymetry OB-CCT (Haag Streit OLCR Optical Low Coherence Reflectometry Bern, Switzerland).


Ophthalmiatrion Eye Hospital Athens ,Greece.


Eyes of healthy participants, patients with ocular hypertension (OHT) and patients with open-angle glaucoma were included in this prospective study. In each participant, GAT, OB-CCT and measurements with Corvis ST were obtained and correlation analyses were performed.


A consecutive series of 87 right study eyes of 87 participants (30 eyes with glaucoma, 30 eyes with OHT and 27 control eyes) were included in this prospective study. The mean GAT of all included was 17.3± Hg compared with mean Corvis-IOP of 17.5±5.0mm Hg (Pearson's r=0.834, p<;0.0001). Mean OB-CCT was 549.39±40.0 µm compared with Corvis-CCT of 555.2±41.6 µm (Pearson's r=0.99 ,p<0.0001). Bland-Altman plots of all included eyes revealed good agreement of the IOP and CCT measurement techniques.


Obtaining CCT and measuring IOP with the Corvis ST reveals good accuracy in healthy subjects and patients with OHT and glaucoma when compared with standardized optical pachymetry or GAT

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