If you suddenly notice spots, floaters, or flashes of light, you may be experiencing the warning signs of retinal tear or detachment. Your vision might become blurry, or see a shadow or a curtain coming across the vision. These signs can occur gradually as the retina pulls away from the supportive tissue, or they may occur suddenly if the retina detaches immediately. There is no pain associated with retinal detachment. If you experience any of the signs, consult your eye doctor right away. Immediate treatment increases your odds of regaining lost vision.