Haypokes are very common, and most heal fine with prompt treatment. The important thing is not to mess with it yourself as this could cause further injury if there's something still stuck in the eye, or introduce infection as nothing you can do yourself at home will be sterile- and the vet will need to use a special dye to see where any foreign body or injury is. Should be a quick vet trip and coming home with some antibiotic eyedrops, so consultation fee plus eye drops, probably about £60-£70 depending how bad and like
@Veggies Galore says possibly a follow up appointment in about a week!
Healing wheeks, glad you caught it so soon, eye injuries need rapid treatment to ensure the best outcome x