Generally speaking, the stress can cause the sudden blurred vision, and many guys want to clear it, but I want to tell you that stress is one of the main reasons for the blurred vision. As we all know that stress can cause the extension of your neck and shoulder muscle, also the stress can also cause the extension of your eyes, which will reduce the automatic eye movement and interfere with your ability to focus on. At the same time, when you are filled with stress, you will feel that you blood sugar are increasing and then you will also experience the blurred vision. Due to the two reasons mentioned above, it is likely for you to have the sudden blurred vision. Of course, you should try to clear the stress, if not, the blurred vision will interfere with your work, study and life. LOL, there is a fantastic way for you to clear your stress just relax yourself, when you feel relaxed, the blurred vision will disappear also.