What Causes Sudden Blurry Vision? Sudden Blurry vision can be worrying, especially when your eyesight becomes unclear without warning. Why does sight suddenly become hazy? The causes span from mild concerns like eye fatigue or an inaccurate lens power to severe health issues affecting your optic nerve, retina, or brain. https://www.tumblr.com/maheshnadgir/827468450128609280/sprain-vs-fracture-how-can-you-tell-the?source=share