The geometric features of (a) lens, (b) zonules, ciliary body, and (c) the optic nerve head. (a) A fifth-order polynomial was used to define the lens outline from the central axis. (I) The geometric dimensions of the axisymmetric section of the lens including cortex and nucleus. (II) Top view of the lens. (b) (I) A cross section of the revolved finite element mesh of the lens, zonules, and ciliary body. (II) A section of our model showing the connection of the lens, zonules, and ciliary body. The units are in millimeter. (c) The optic nerve head (ONH) consists of the prelaminar tissue, the lamina cribrosa, and the neural tissue. (I) The geometric dimensions of the tissues that make up the ONH are given in detail in Ref. [43]. (II) Cross section of finite element mesh of the ONH.