Caitlin, I'm sorry to hear of this with Harris. That "contact lens" is called an aphakic crescent - the crescent-shaped tapetal reflex seen between the iris margin and a subluxated lens. I don't see a reason for an ER visit for the very reasons you stated. Please respond with further questions or concerns if you wish.
You're quite welcome, Caitlin. If the eye is to be enucleated and Harris remains non-painful, waiting until Monday is certainly appropriate. I can't set a follow-up in this venue so please return to our conversation - even after rating - with an update at your convenience. You can bookmark this page for ease of return.
Thank you for your kind accept. I appreciate it.