I agree you need to see an eye doctor. You can also go to health forums and go to eye care or the section on eyes. There are two very nice doctors on that site that can help temporarily until you get to the doctor. Eye strain may cause blurry vision but it shouldn't last very long.
mkh9
Jessy- please see your dentist to rule out (or if discovered to have it- treat) infection regarding your wisdom teeth. Even if no infection, they may recommend treatment (whether it be pulling the teeth or whathaveyou) for these painful teeth! (How awful!)
Also, please call the opthamologist and set up on an urgent basis an appointment regarding this prolongerd blurring. Staring for a long time I think could make a person start to blur, but this shouldn't last for 4-5 hours!
I'm not really sure about the wisdom teeth but if you are looking at something up close for a long time then maybe you have lazy eyes. What you need to do is look out the window and find something far away. hold your finger out in front of you. Look at the things far away then look at your finger. keep doing this repeatedly. Think of it as an eye exercise. I do it with both eyes at the same time but it's suggested that you do it with one eye covered(with your hand).
If it's not that then maybe it is your wisdom teeth and maybe someone else with more experience in that area can help you.
~Jamie