hi..u might be having referred pain
because of cough/sinusitis
..please consult physician/ENT doc for further opinion..u may start antibiotics/ expectorant syrup/steam inhalation..avoid cold drinks..and chilled foods.
u may get vision and refraction
tested under standered testing conditions..rather than just imagining the vision in gereral viewing condition..
u may take pain killer if pain is severe ..tab paracetamol