Have You Ever Had Your Eyeballs Dilated?

My Fiance Keri is a bit nervous this afternoon. She has an eye appointment, or should I say, a follow up to her last appointment.

They will be doing some pretty routine and procedural tests on her eyes to pin point what she needs for her next glasses prescription. She's worried she won't be able to see after the appointment. Have you ever had this done? Can you see after or is it just a blurry thing for a couple of hours. Let her know!