Related Experiment Video
Updated: Aug 13, 2026
09:21
Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
Published on: September 28, 2015
Double lateral shearing interferometer for the quantitative measurement of tear film topography
Alfredo Dubra1, Carl Paterson, Christopher Dainty
1Blackett Laboratory, Imperial College London, London SW7 2BW, UK. a.dubra@imperial.ac.uk
Applied Optics
|March 16, 2005
Abstract:
A lateral shearing interferometer designed and built for the study of the precorneal tear film topography dynamics and its effect on visual performance is presented. Simple data processing algorithms are discussed and tested on data illustrating different tear topography features: postblink tear undulation, tear breakup, eyelid-produced bumps and ridges, bubbles, and rough precontact lens tear surfaces.
