An accommodative intraocular lens study and experiment, based on compliant mechanisms

To replace the human lens with a cataract, a novel haptic-type lens based on compliant mechanisms is proposed to provide both radial and axial input displacement to change the shape and the axial movement of the optical lens, respectively. With this method, the optical power of an intraocular lens (IOL) can be remarkably improved, thereby enhancing the visual acuity of patients. In terms of the optical power of an IOL obtained by the clinical study, the maximum level is around 3.50 Diopters (D), 3 months later. However, the minimum requirement of the normal physiological function is around 8.00 D. In this study, the haptic is connected to an optical-grade silicon wafer made of polydimethylsiloxane, establishing a human optical system with an optical power of approximately 23.02 D.