Welcome in H.C.M.
I read your query and it made one thing clear in my mind that you are having Acute otitis media
due to eustachian tube dysfunction
. This is a painful disease of ear. You may already be having sinus issue that may be giving blurring of vision.
There are least chances of otitis externa
,this is another painful condition. Differentiation of the two is possible only by physically examining the patient.