Study population of 507 subjects with KAMRA inlays ; predetermined subgroups included 327 subjects that underwent contrast sensitivity testing and another 114 subjects for defocus curve testing , along with 78 subjects randomized between bilateral Crystalens Advanced Optics ( AO ) ( Bausch + Lomb Surgical , Aliso Viejo , California , USA ) , AcrySof IQ ReSTOR +3.0 D ( Alcon Laboratories , Fort Worth , Texas , USA ) , or Tecnis +4 D Multifocal ( MF ) ( Abbott Medical Optics , Santa Ana , California , USA ) IOL .