The biomechanical corrected IOP (bIOP) takes corneal thickness, age and the biomechanical properties of the cornea into consideration. This enables an accurate IOP estimation even in case of altered biomechanical properties.

The equation was derived based on so-called finite element simulations. In numerical simulations the influence of corneal stiffness, corneal thickness, curvature and the biomechanical properties on IOP measurements was analysed systematically.
Based on these results an equation was developed that compensates for these influencing factors. Experimental studies with cadaver eyes and clinical studies have proven the accuracy of the bIOP.