Eye and Contact Lens Movement Measurement
Bob G. Gilman · American journal of optometry and physiological optic · 1982
ABSTRACT An accurate and relatively simple method of measuring eye and contact lens movement has been developed. A hidden ultra‐high‐speed motion picture camera, a digital film data analyzer, and computer data reduction are used to define and separate eye, head, and contact lens movements. The technique has an eye rotational accuracy of about 0.2° and a linear translational accuracy of better than 0.05 mm over a field of view of more than 60°. This procedure requires no extraneous hardware, fixtures, or eye restraints, so data can be obtained in a natural environment. It provides a method of evaluating motility training procedures, studying contact lens fitting methods, and investigating tear pumping mechanisms.