Hello I'm Dr Nikita Iyer. You are suffering from pansinusitis which means all your sinuses (ethmoid, maxillary, frontal and sphenoid) are affected. Medical management can only make you feel symptomatically better for a while but what you need is proper drainage of the sinuses. Sinusitis can cause complications and vision blurring is one of them thus you need to visit an ENT surgeon.
Next Steps
Visit an ENT doctor with the films of your CT scan as well as report who would be able to plan you for a sinus surgery with prior medical management. Nasal douching and sprays might be needed even post surgery.