I'm pretty sure my rat has head tilt?

most rats that have head til walk in circles, it's kinda funny actually. though it does sound like Oliver has an inner ear infection it can also just be he's got vision problems. i have a mommy rat thatgave birth to a litter w/in that litter we have 1 baby ho's now 6 months old and has no depth perception whatso ever she's partially blind too and just wals off the edge ofthings, tries to jump from tall places thinking they're closer then really are and in general she is just clutzy