Systems and methods for measuring and recording instantaneous or historic pressure topography or wave on the eye and the firmness of the eye where measuring IOP including a sensing section comprise two sensors, a microprocessor, a sensor support, and a handle. A sensor comprises contact-sensitive surface that makes contact with the eye during measuring procedure to determine area of the eye surface in contacted with the sensing section. Another second sensor comprises a force detector to determine the force applied by the eye surface when contacted by the sensing section. A microprocessor can receive essentially simultaneous input from the two sensors and/or in conjunction with two sensors can output time-tagged data that can be correlated to determine measured contact surface area and applied force at any given time. Data taken at various frequencies over a time period can be interpolated and/or extrapolated to facilitate correlation of measurements.
