Apple has used two display manufacturers for the Retina MacBook Pro, LG and Samsung. Based on one of the longest discussion threads I’ve ever read on the Apple Support forums, many users are experiencing issues with LG manufactured Retina displays including burn-ins, color accuracy, and ghosting/image retention. The Samsung manufactured Retina displays seem to be working fine.
https://discussions.apple.com/message/18669644

To determine what company manufactured the Retina display, follow the instructions listed here:
http://www.cyneticsoft.com/mbpretina

If you are experiencing these display issues with your Retina MacBook Pro, contact AppleCare or a local Apple Store immediately.