Patent ID: 6595920
Filing Date: 2003-07-22
Classification: A61B

Abstract:
A method for measuring the intraocular pressure of a cornea of an eye, the cornea having an outwardly facing surface comprising the steps of:(a) directing at least one coherent light beam along a path to the cornea surface; (b) directing puffs of air or other gaseous fluid to the cornea surface at puff rates of between 5 hertz to 100 hertz to cause the cornea surface to be displaced; (c) reflecting the beam from the cornea surface to a sensor; (d) measuring variations of light intensity reaching the sensor and ascertaining therefrom the induced deflection of the cornea; (e) separating signals based upon the displacement of the cornea from the puffs of air set forth in step (b) from signals based upon displacement of the cornea from random human motion; and (f) calculating therefrom the intraocular pressure.