What Causes Sudden Blurry Vision? Experiencing A sudden blurriness in your sight can be alarming, particularly when it occurs unexpectedly. What Causes Sudden Blurry Vision? 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://sites.google.com/view/drruchika25/blog/what-causes-sudden-blurry-vision