According to your description, you probably got sinusitis. People who suffers from sinusitis can swell up and press against the nerves. So, there is no matter of your eyes. Maybe you can take some Sudafed, 2 capsules 2 times a day. It properly help you. If you it doesn't improve, you'd better see a doctors and treat your eyes immediately.
From the respect of anatomy, we know that the eyes and nose are connected with nasolacrimal duct, and this is why we often feel bitter in our mouth after taking eye drops. For people with allergic constitution, when the allergic rhinitis breaks out, it is most likely to be companied with itchy eyes, which is also a symptom of allergic conjunctivitis. So these people are recommended to keep away from allergen. If the symptom is very serious, we also need to take some anti-allergic agents, such as Levocetirizine, Fexofenadine.