There are a number of halos or auras surrounding objects, trails following objects in motion, difficulty distinguishing between colors, apparent shifts in the hue of a given item, the illusion of movement in a static setting, air assuming a grainy or textured quality ( visual snow or static, by popular description, not to be confused with normal " blue field entoptic phenomenon " ), distortions in the dimensions of a perceived object, and a heightened awareness of floaters.