Statement of the problem of intraocular pressure measurement modeling by a pneumotonometric method

The process of intraocular pressure measurement by an optical analyzer is numerically modeled. The cornea and sclera are treated as axially symmetric deformable shells of revolution rigidly fixed along the edges; the space between the shells is filled with an incompressible liquid. The stress-strain state of the cornea and sclera is described by using a nonlinear theory of shells. The optical system is calculated on the basis of concepts of geometrical optics. Two types of boundary conditions are compared; for each of them, the relation between the pressure in the air jet and the area of the surface from which the reflected light is recorded by the photodetector is analyzed.