Hi there, the red circle could indicate that the hay poke was quite deep & has caused internal bleeding in the eyeball itself?
Probably best to see a vet to check Wilburs eyes, they're so fragile & complications can happen quickly with eyes.
My RB piggy Orca was always getting hay pokes & always had eye problems.
I used to regularly take her to the vets for eye drops, Tiacil was the most common one in later years, as it was an antibiotic eye drop, so would clear up any infection in the eye too.
Tiacil Ophthalmic Solution 5ml for Cats, Dogs and Rabbits
Its a prescription only medication, but you might be able to get it cheaper if the vet does a prescription only & you send it away for online ordering (approx £22 for 3g tube in my vets).
I used it with Remend eye gel about an hour later. Used like this it would speed up the healing process
Remend Corneal Repair Gel - 3ml
Good luck & hopefully with the correct quick treatment, Wilbur will fully recover.
... Nb Orca's eyes looked normal after treatment except little scar marks where the poke had been.
It was only after many, many pokes she had irreparable damage & she was virtually blind in the one eye.
Healing vibes Wilbur, speedy recovery xx