- Brownlow Street- School of engineering
– Harrison Hughes Building The University of Liverpool - 7481432045
Osama Maklad
University of Liverpool, Centre for Materials and Structures, Department Member
- Osama Maklad is currently a PhD candidate at the University of Liverpool within the Biomechanics Engineering group (BIOEG). Osama is working on impinging jets and Aero-elasticity of the human eye for Glaucoma management and intraocular pressure research.edit
Glaucoma is one of the ocular diseases which develops when the eye internal fluid cannot drain properly and intraocular pressure builds up. This can result in damage to the optic nerve and the nerve fibers from the retina and early... more
Glaucoma is one of the ocular diseases which develops when the eye internal fluid cannot drain properly and intraocular pressure builds up. This can result in damage to the optic nerve and the nerve fibers from the retina and early diagnosis is very important as any damage to the eyes cannot be reversed [1]-[3]. Non-contact IOP measurement techniques like corneal response analyzers including CorVis-ST are very popular. The technique depends on impingement of an air puff to the cornea and recording the corneal response to the impact force from the puff using high speed Scheimpflug imaging. The aim of this study is to improve the accuracy of the IOP measurements by considering the fluid structure interaction effect between the cornea, the air puff and the eye internal fluid through a parametric study of numerical models and their comparisons with the clinical data.
Research Interests:
The air puff test is a non-contact method used in different areas to investigate the material behaviour or the biomechanical properties of biological tissues such as skin, cornea, and soft tissue tumours and also to study fruit firmness... more
The air puff test is a non-contact method used in different areas to investigate the material behaviour or the biomechanical properties of biological tissues such as skin, cornea, and soft tissue tumours and also to study fruit firmness or meat tenderness. For the human eye, having a valid and fully coupled numerical simulation of the air puff test is very helpful and can greatly benefit to reduce a lot of time and cost of experimental testing. The gab in research in this area is considering the fluid structure interaction effect between the cornea, the air puff and the eye internal fluid. The simulation of the air puff test on the human eye is a Multi-physics problem which means; coupling between different numerical models and solvers with different governing equations and exchanging the data between them during the solution. A Computational Fluid Dynamics (CFD) model has been generated for an impinging air jet of maximum velocity of 168 m/s over a time span of 30ms and a coupling between the CFD model and the Finite Element (FE) model of the human eye has been successfully achieved for accurate simulation of the Fluid Structure Interaction (FSI) effect on the human eye cornea deformation.