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Corneal biomechanical measurement (Corvis) in clinical practice: first experience with biomechanical/tomographic examination

Poster Details

First Author: L.Valešová CZECH REPUBLIC

Co Author(s):    J. Miksovska   E. Jerhotova   K. Pulchartova              

Abstract Details


Obtain diagnostic reliability of new biomechanical device Corvis


DuoVize Eye Clinic Prague Czech Republic


DuoVize Eye Clinic tested a device combining biomechanical and tomographic corneal examination and compare results of ectasia suspection from both. We examined 92 patients from the general population and patients with keratoconus of varying degrees. Biomechanical parameters (Stiffness Parameter A1, Integrated Radius, ARTh, DARATIo, CBI) and tomographic parameters (keratometry, pachymetry, anterior and posterior corneal curvature, CTSP, PTI, BAD D), TBI were examined and evaluated.


From Pentacam (BAD): 12 ectasias/24 suspect ectasias/56 healthy eyes From Biomechanical measurement (CBI) 25 ectasias/ 3 suspect ectasias/ 64 healthy eyes We compared the diagnostic benefits of the individual groups of clinical examinations for the diagnosis of corneal ectasis. The work shows that the biomechanical measurement of the cornea in patients with proven keratoconus shows clearly pathological values confirming ectasia. In patients with a tomographic ambiguous finding, the results of biomechanical parameters varied considerably across the spectrum from normal to pathological values.


Biomechanical corneal measurement is a new complementary examination that can confirm corneal ektasis. Interpretation of biomechanical measurement results in patients with only suspected tomography findings requires even longer experience with the biomechanical measurement.

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