Hi all, First post and looking for advice. My seven year Weimaraner has for the last two weeks an acute onset raised 3rd eyelid which is really visible. Have been to the vets and tried steroid jab, piriton, and abx and no improvement over 4/5 days - so we are ruling out allergy and infection so far. I am thinking it may be horners syndrome as he has a small pupil, droopy eyelid and raised 3rd eyelid. He’s not in pain and it doesn’t bother him. I am just wondering what my next steps might be?? Does anyone have experience with horners syndrome ? I have attached a photo if anyone has any further thoughts... Thanks!