Selected parameters of the corneal deformation in the Corvis tonometer
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چکیده
منابع مشابه
Selected parameters of the corneal deformation in the Corvis tonometer
INTRODUCTION Contemporary ophthalmology knows many methods of measuring intraocular pressure, namely the methods of non-contact and impression applanation tonometry. In non-contact applanation tonometers, e.g. the Corvis, the corneal flattening is caused by an air puff. Image registration of the corneal deflection performed by a tonometer enables to determine other interesting biomechanical par...
متن کاملAutomatic method of analysis and measurement of additional parameters of corneal deformation in the Corvis tonometer
INTRODUCTION The method for measuring intraocular pressure using the Corvis tonometer provides a sequence of images of corneal deformation. Deformations of the cornea are recorded using the ultra-high-speed Scheimpflug camera. This paper presents a new and reproducible method of analysis of corneal deformation images that allows for automatic measurements of new features, namely new three param...
متن کاملOpen source software for the analysis of corneal deformation parameters on the images from the Corvis tonometer
BACKGROUND The software supplied with the Corvis tonometer (which is designed to measure intraocular pressure with the use of the air-puff method) is limited to providing basic numerical data. These data relate to the values of the measured intraocular pressure and, for example, applanation amplitudes. However, on the basis of a sequence of images obtained from the Corvis tonometer, it is possi...
متن کاملEffects of laser in situ keratomileusis (LASIK) on corneal biomechanical measurements with the Corvis ST tonometer
PURPOSE This study was initiated to evaluate biomechanical changes using the Corvis ST tonometer (CST) on the cornea after laser in situ keratomileusis (LASIK). SETTING University Medical Center Hamburg-Eppendorf, Germany, and Care Vision Refractive Centers, Germany. DESIGN Retrospective cohort study. METHODS This retrospective study included 37 eyes of 37 refractive patients. All CST mea...
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ژورنال
عنوان ژورنال: BioMedical Engineering OnLine
سال: 2014
ISSN: 1475-925X
DOI: 10.1186/1475-925x-13-55