My Dear,
Thanks for sending your query to us.
Uveitis will be diagnosed by a routine ophthalmological examination and will be ruled out at your inetial eye checkup. XXXXXXX you get when the vessels are constricting and pain of migrain you get when they dialate.
So for a persistent XXXXXXX you have to rule out a disorder which constricts the vessels.
Uvitis if anterior leads to triad of pain,redness and low vision and if posterior may only lead to low vision.
please do get back to me in case of any further query in this regard.