Well, generally speaking, yes, blephariti can cause blurred vision. First, you should know that Blephariti is inflammation usually involving the part of the eyelid where the eyelashes grow. The eyes can eventually become red, irritated and itchy. And in some cases, Blephariti occurs when the small oil glands near the base of the eyelashes don't work properly, either because of a bacterial infection or some complication of a skin condition. And so it can also lead to blurred vision. So just be careful about it. Generally speaking, it is important for individuals to avoid touching eyes unless 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, and the blurred vision. Anyway, you should heal the blephariti first.