Study On Mechanical Properties Of Hydrophobic Foldable Intraocular Lens

Hydrophobic foldable IOL has been widely used in cataract surgery. However, themechanical properties of hydrophobic foldable IOL has been poorly researched. Based onthe IOL project of Shenyang Green Valley Biotechnology Industry Co., Ltd., morein-depth research on its mechanical properties has been done combined with the researchof experts home and abroad. It is significant to design and product more high quality IOLin the future.Through the study, the mechanical properties of IOL is decided by the materialproperties and structural shape. Therefore, three aspects are in research. Firstly, thehydrophobic material parameters cannot be obtained by standard test, so it is feasible to getthe material parameters using numerical simulation and experimental method based on thecompression test. Material constitutive model parameters to the hydrophobic IOL iscalculated by finite element analysis software. Secondly, in the compression force, axialdisplacement, optical decentration and tilt, contact angle and other mechanical properties,the differences between the two-haptic and four-haptic structure features are been showedthrough comparison. Two IOL implanted states are simulated by the finite element analysissoftware. Studies proof that the four-haptic is better than two-haptic in the stability of theimplanted IOL and the capsular bag fit and smoothness. The two-haptic in the optical areaaffected, comfort, adaptability perform is better. IOL structural features play a decisive role.Finally, design a new one, simulation verify through combining the the advantages of twodifferent IOL. The design is reasonable and feasible and provide a reference for futureforce IOL optimization.The results of the clinical trials and finite element simulation show the design isreasonable, and make a good foundation for the future more in-depth study of IOL.