Patent ID: 9155467
Filing Date: 2015-10-13
Classification: A61B

Abstract:
1. A system for measuring intraocular pressure (IOP) of a subject's eye, comprising: a plurality of force sensors, said force sensors being adapted to contact a surface of the subject's eye via moveable probes; an advancing device for advancing said force sensors towards the subject's eye in a controlled fashion; a measuring device for measuring forces being exerted on said force sensors when said force sensors are in contact with the subject's eye surface; and a processor adapted to receive said measured forces and programmed to determine intraocular pressure (IOP) of the subject's eye as a function of said measured forces, wherein said IOP of the subject's eye is determined by finding intercepts of force curves with either vertical or horizontal axes, where a distance of said intercepts is proportional to intraocular pressure and an offset between the two force probes via the following relationship where: p is the IOP value, and d represents a horizontal distance and Z represents a vertical distance, respectively, between the force probes, k is a calibration stiffness coefficient with units of mm 2 , and F E c is the distance from the intercepts to the origin of the plot where both forces are zero.