Well, generally speaking, yes, blephariti can cause double vision. As we know that Blephariti is inflammation that occurs in the part of the eyelid. In many cases, if you get T blephariti, it can lead to many eye diseases. For example, your eyes can become red, irritated and itchy. Maybe lead to double vision. It can be dangerous to have double vision, when you have driving. So for you, I will suggest that you should not touch eyes unless hands are clean. For the home remedy, you can put a damp, warm washcloth held over the infected eye a few times. In this way, it can help relieve swelling, itching and redness. And also it will do a help to the double vision. By the way, according to some researches, blephariti occurs when the small oil glands near the base of the eyelashes don't work properly. So just be careful about it.
Yes, the blepharitis will cause the double vision. As we know, blepharitis is an acute suppurative inflammation eyelid of common glands and hair follicles eyelash. It is the bacterium that causes the inflammation in the eyes. It is the coming bacterium that causes the double vision. In addition, such inflammation for the eyes may cause the twitching eyes which will make you feel uncomfortable and painful. You'd better use some eye drops with anti-inflammation to let the eyes get release. At the same time, you could accept the medical treatment which will make you cure the blepharitis. If you have the double vision, you'd better go to the hospital as soon as possible.
Well, it seems that you are afraid of getting that kind of disease, as a matter of fact, it is quite serious which could give rise to some relevant problems, such as painful eye balls, blurred vision, headaches, as well as double vision, if the situation is pretty bad. Because blepharitis is contagious and it connects different parts of your eyes. At later stages, you would suffer more serious consequences, so, you had better take care of it before long.