pp. 2081-2090
S&M4043 Research Paper of Special Issue https://doi.org/10.18494/SAM5566 Published: May 30, 2025 Using Simulation Method to Analyze Intraocular Pressure at Different Postures and Eye Movement Angles [PDF] Jiehui Zheng, Chih-Chung Cheng, Chao-Ming Hsu, Chia-Wen Lee, Pei-Chang Wu, Linda Yi-Chieh Poon, and Cheng-Fu Yang (Received January 27, 2025; Accepted April 17, 2025) Keywords: intraocular pressure (IOP), Ansys, SolidWorks, stress and strain, Mooney–Rivlin hyperelastic material, standing, side-lying, supine
In this project, we analyzed the stress and strain distributions in the eye under pressure using Ansys finite element simulation software, with the eye model created in SolidWorks. We simulated contact tonometry by applying various probe forces to measure intraocular pressure (IOP) changes. Five different eye models with axial lengths ranging from 22 to 30 mm were investigated. The process began with creating detailed eye components in SolidWorks, including the aqueous humor, zonular fibers, ciliary body, sclera, cornea, and vitreous body. These components were then imported into Ansys for mesh generation, boundary condition definition, and simulation calculations. Results were analyzed using the Ansys postprocessor and validated against experimental measurements to ensure accuracy. For material properties, all eye tissues were modeled as Mooney–Rivlin hyperelastic materials. During compression, the cornea and sclera were found to be the primary structures absorbing the concentrated loads. The simulation examined three patient positions, namely, standing, side-lying, and supine, combined with eyeball rotations of 15, 30, and 45°. This comprehensive approach allowed for the observation of stress-strain relationships and IOP variations under different probe forces and eye orientations.
Corresponding author: Linda Yi-Chieh Poon and Cheng-Fu Yang![]() ![]() This work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Jiehui Zheng, Chih-Chung Cheng, Chao-Ming Hsu, Chia-Wen Lee, Pei-Chang Wu, Linda Yi-Chieh Poon, and Cheng-Fu Yang, Using Simulation Method to Analyze Intraocular Pressure at Different Postures and Eye Movement Angles, Sens. Mater., Vol. 37, No. 5, 2025, p. 2081-2090. |