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This is Dr. David
yes, a sinus infection can cause your eyes to tear and mucus to get into your eyes and can cause blurry vision in one eye.
treating the sinus infection with antibiotic therapy and steroid sprays and allergy medications can help clear up your sinus infection and you can see if your blurriness of vision and tearing of your eyes can get better
are you having bad sinus congestion? runny nose? tearing of your eyes?