All eyes mentioned in this article are assumed to be human eyes, but in badfic, speshul eyes may occur in any species... even species with eyes that do not vary. Although all eyes are unique, and even in real life eyes with interesting or unexpected traits may occur, speshul eyes strain believability with their appearance. Eyes that are two different colors are rare, but exist, and eyes that seem to change color depending on the light or depending on clothing/makeup worn can be considered normal. However, many people possess eyes with these traits; they are not special or unique in concept. Normally little attention is called to them beyond establishing a character's appearance, and they blend happily into the setting.