Well, yes, sinus infection can lead to blephariti. As we know that when you have sinus infection, it is likely to have itchy eyes, red eyes. In some degrees, it can cause eye infection. In that way, it can lead to blephariti. To treat it, the most important method for preventing eye infections is frequent, proper hand washing, and keeps your eyes from being infected, for our hands and fingers can carry bacteria that cause eye infections. Generally speaking, it is important for individuals to avoid touching their eyes unless their hands are clean. And then, you can put a damp, warm washcloth held over the infected eye a few times a day. In this way, it can help relieve swelling, itching and redness. Avoiding wearing contacts and eye makeup can be effective too.