Just a quick note-My son had his vision checked my our family doc, and they found no problems. IMO, they are not thorough enough, obviously-they are not eye Drs. He kept complaining of headaches, so I set him up with my eye doc...turns out he did need glasses. So if you're concerned about your child's vision, take her to an eye doc. As far as what to expect, the 4 year check up is just a general well-child check. She'll probably get shots, although I know the range for the vaccines is 4-6 yrs. It's basically up to you when she receives them, if at all.