Sinus Infection and Eyesight?

Quite recently, I've had a sinus infection, which I get usually once a year do to the fact that I don't blow my nose enough, and my sinuses don't drain quite right.

But anyway, over the past week, my sinus infection wasn't quite as severe as normal, just a lot of pressure in the sinus cavities just above and below the eyes, which caused a mild sinus headache. Also, it caused me to lose vision quite significantly in my right eye although the pressure was all over. I had figured this was merely the pressure restricting the blood flow to the retina in my right eye.

But now, as the sinus infection has nearly cleared up, my blurred vision has not. My left eye is normal, but my right eye has vision which is quite blurred and spotty similar to how your eyesight is when you first wake up. I also have trouble focusing on words, when I close my left eye and try to read with my right.

Has this happened to anyone else? And if so what happened?