They can make your eyesight be wonky, rotating your vision, reversing the colors, making the surrounding area dark to you, pixelate, make a transparent TV static movement in the background, etc. they also can change how you look, to others and to yourself (though always together!), but sometimes it can seep and become a reality, The effects can be temporary in a set time or when Optic decides to remove the effect, but if it seeped or they decided its permanent, good luck buddy.