What causes sudden blurred vision in eyes

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The sudden onset of flashing lights, a noticeable increase in the amount of floaters, a shadow in your peripheral vision, or a gray curtain moving across your field of vision could be signs of a detachment of the retina — the nerve layer in the back of the eye that sends images to the brain. Nearsightedness, eye diseases like glaucoma, and physical injury to the eye are among the causes of retinal detachment. Unless treated quickly, usually with surgery, retinal detachment can lead to blindness. Most eye diseases are painless, but some conditions or injuries can result in eye pain, says Richard Shugarman, MD, an ophthalmologist in West Palm Beach, Florida. Eye pain can be caused by glaucoma, dry eye, an eye injury, a scratched cornea, or even cancer of the eye.

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