Abstract: Apparatus for measuring pressure within an eye includes means for increasingly inwardly deforming a surface of the eye by applying a progressively increasing force onto the surface, means responsive to inward deformation of the eye surface for taking a measure related to the amount of the deformation and means for taking a measure related to the amount of the applied force at a sampling time during the progressively increasing force, and electronic means responsive to the deformation-related measuring means and the applied force-related measuring means for determining intraocular pressure from the relation between the measures.

Abstract: Apparatus for measuring pressure within an eye, includes an air chamber having a deformable wall portion, the air chamber being operatively coupled to a pressure sensor for measuring the pressure within the air chamber, a member interposable between a surface of the eye and the deformable wall portion, the member having a rear end arranged and adapted to inwardly deform the deformable wall portion and a front end arranged and adapted to inwardly deform the eye surface when the member is interposed between the eye surface and the deformable wall surface and the air chamber is moved relative to the eye surface in a direction that shortens the distance between the eye and the air chamber.