Non-Contact Stifness Assessment of Thin Soft Tissue-Mimicking Phantoms and Ex Vivo Corneas Using Acoustic Micro Tapping and Surface Wave Analysis Supported by OCT Permalink
Poster, DAGA II Annual German Acoustics Conference, Dresden, Germany
Conferences
Visualization and quantification of mechanical wave propagation in soft media using phase-sensitive OCT and focused-ultrasound stimulation Permalink
Poster, CRATER 2.0 II Conference on Recent Advances in Translational Eye Research, Warsaw, Poland
A Study on Corneal Properties Through Digital Holography Permalink
Talk, IFEMA, Madrid, Spain
In this work, double-wavelength holographic interferometry has been applied to measure shape and to be used as a corneal topographer for both synthetic and biological corneas. Holograms were recorded using pre-established setups, and from their analysis, a 2D map of the Z-position of all points on the outer surface was obtained over a field larger than the visible horizontal iris diameter, with a precision of 36 μm, representing a significant improvement over existing topographers. From the surface data, by means of a least-squares conic fit, we were able to calculate the radius of curvature. All these results were obtained independently of the sample’s specularity, in two synthetic corneas, a (transparent) contact lens, and two ex vivo rabbit corneas.