Effect of haptic geometry in C-loop intraocular lenses on optical quality

The biomechanical stability of intraocular lenses (IOLs) must achieve high-quality optical performance and clinical outcomes after cataract surgery. For this reason, the quality features IOLs should be previously analysed following Standard ISO 11979-2 11979-3. 11979-3 tries to reproduce behaviour IOL in capsular bag by compressing lens between two clamps. With test, it has been demonstrated that haptic design is a crucial factor obtain stability. Hence, main goal study was an aberration-free aspheric influence geometry on quality. purpose, 5 hydrophobic with different were manufactured their compared experimentally numerically. classified as stiff flexible designs depending geometry. response measured means compression force, axial displacement, angle contact or area, decentration, tilt strain energy. results suggest vitro silico tests present similar responses for analysed. Furthermore, presented better than designs. These correlated performance, where decreases worst This numerical methodology provides indisputable advance regarding designs, leading reduce costs exploring feasible space solutions during product process prior manufacturing.