关键词: 计算机辅助医疗, 物理仿真, 多相流耦合, 多相流扩散, 流体-弹性体耦合

Abstract: Due to the lack of quantitative research on the appropriate amount of silicone oil and the removal time, pars plana vitrectomy combined with silicone oil tamponade is prone to various ocular complications that affect postoperative visual recovery. To address this practical issue, a smooth particle hydrodynamics (SPH) method based on incompressible number density is proposed to simulate the coupled interaction of silicone oil and water inside the eyeball. Specifically, the surface tension model and local equilibrium model are combined to simulate the strong surface tension and emulsification diffusion phenomenon of silicone oil, and the elastic model is introduced to achieve stable coupling between the silicone oil and intraocular fluid with the ocular tissue. The experimental results show that the visualization simulation of silicone oil tamponade and emulsification process can provide an effective computer-aided means for doctors’ clinical diagnosis, surgical planning, and prognosis monitoring, so as to improve the success rate of surgery and postoperative outcomes.

Key words: computer-aided medicine, physical simulation, multiphase fluid coupling; multiphase fluid diffusion, fluid-elastomer coupling