Blurry vision is a common symptom of chronic dry eye. A healthy tear film doesn’t simply keep the front of the eye moist; it is also important for clear vision. Your tears must have the correct balance of water, oils, and mucus to allow the tear film to spread evenly across the surface of the cornea. If the tears evaporate too easily or become too oily and mucus filled, this can make your vision blurry. Blinking fully and frequently can decrease this, as it spreads the tear film across the cornea.