Your symptoms are most probably due to acute infection in your sinus and it has spread to your throat. More important is sinus infection
has complicated by spreading to your right eye.
You need to see an ENT specialist
urgently. Because antibiotic course did not help and doctor needs to assess what is the severity of infection in eye - just an inflammation, pus collection, is it affecting your sight (vision) in right eye. He also needs to see the reason for soreness in your ear - is it due to referred pain
because of infection in sinuses
and eye or infection has spread to ear also.
He may ask for a C T scan of sinuses to see which of the sinus is affected and condition in your right eye to plan for treatment. Please do not wait any more.