When driving with blurred eyes and difficulty seeing clearly, this situation may be caused by the following reasons: First, there may be refractive errors in the eyes themselves, including myopia, hyperopia, astigmatism, refractive aberration and other refractive errors. When driving may have a high demand for vision, and the demand is for sports vision, this time will show the symptoms of difficulty in vision and blurred eyes when driving. Second, there may be long-term fatigue of the eyes, resulting in visual fatigue, causing blurred vision in the eyes when driving. Third, it is possible that long-term chronic conjunctivitis, dry eye and other inflammatory conditions in the eyes can cause discomfort in the eyes while driving. As the concentration is higher when driving, the blinking action will be reduced accordingly, causing too many tears to evaporate from the eyes and blurred vision to occur. Fourth, systemic diseases can also cause blurred eyes when driving, such as weakness and severe anemia, so that driving will also appear dizzy and blurred vision.