17.If somebody already requires distance correction, often they'll be be fitted with bifocals or contacts with two different types of lenses: one for far and one for near.
18.Pierre says, " You're supposed to be here helping me pick out frames for my new bifocals." Pierre is saying that Alice is supposed to be helping him pick out frames.
19.Alice says, " everybody is getting progressives these days (nowadays)." Pierre says, " I've always had bifocals and that's what I'm going to get." Alice asks him, " Are you going to get metal, plastic, or rimless frames? "