Can sinus cause distorted vision?

Yes if severe: In this picture you'll see how close your sinuses are to your eyeballs. Increased pressure in your sinuses can put pressure on the nerves used for eye movement. Sinus medication can also make it hard to focus your eyes. If the area around your eyes gets red and swollen, or if you have double vision, the infection could have traveled to a dangerous place. For any vision change, see a doctor!