Can you wear contacts during or after a pupil dilation eye exam?

I would bring your regular glasses and sun glasses.  

Answer

No, but you won't be able to see for a while, anyway.  

Answer

I just got back from an eye exam. The optometrist told me to wear my contacts, but throw them away when I take them out for the night, and put on a new pair in the morning. He said sometimes the drops could contaminate the lenses and re-dilate my eyes in the morning.
I'm nearsighted, not sure if it's different for people that are farsighted.