I went to my OD today due to uneven pupils. They are not constantly uneven, but it is always the same pupil that is smaller when it happens. OD diagnosed me with Horner's Syndrome, but she said that I only have a mild case because I have no other symptoms other than the pupil. (i don't have issues with lack of flushing/sweating on that side and my eyelid is not drooping). She asked me if I had injured my neck or had neck surgery, which I had not. I have no other health issues other than high blood pressure, which I take lisinopril for. She recommended an MRI to rule out small tumor or mini-stroke. My eye pressure was normal in both eyes, and my optic nerve is not swollen. She did rule out tonic pupil because of the way my pupils react to light. Is it possible to have Horner's syndrome without a droopy eyelid? It seems that everything I read implies that you have to have the droopy eyelid as a symptom. I guess I am confused!
Thanks!