Intraocular Lenses Angle Kappa and Patient Satisfaction with Trifocal IOLs Jan 21, 2022 Ronan Conlon, MD Related Publications Refractive And Diffractive Principles In Presbyopia-Correcting IOLs — An Optical Lesson Intraocular Lenses Multifocality in IOLs is achieved through refractive or diffractive optical approaches. Learn More ↑