Influence of corneal biomechanical properties on intraocular pressure measurement

Department of Ophthalmology, Biomedical Engineering Center, The Ohio State University, Columbus, Ohio, USA.

The model assumed an overall resultant pressure that was based on the summation of the applanation pressure, the true IOP, and the surface tension caused by the tear film to determine the final deformation of the corneal apex during IOP measurement. Corneal resistance was varied according to the cornea's biomechanical properties, thickness, and curvature, and the effect of each variable on the accuracy of IOP tonometry readings was examined quantitatively.