I like to describe the way this lens works to the patient (briefly) because it can really set expectationsto an appropriate place.  Multifocal lenses DON'T work like progressive or bifocal glasses.  Your eyeis getting multiple images at the same time, and thebrain interprets them.  If that sounds like it is incrediblycomplicated and difficult for the brain to do, it's becauseit is, so don't...