Not at all. Eye dilation does not hurt. The most you will experience is blurred vision when trying to see up close, and the sensation that everything is a lot brighter. Be sure to bring sunglasses to the examination, although most eye doctor offices offer shades to wear after dilation.
Eye dilation. No, the act of dilating your eyes will not hurt, but if you go out into the bright sunlight afterwards, it will hurt because your pupils cannot constrict for a period of time afterwards. The effect goes away in a few hours. Bring some sunglasses with you to such an exam just in case!