I see fairies, but they aren't supernatural spirits or something like that. It's similar in nature to deja vu, so if you don't interpret deja vu as prediction of future, fairies are similar. The Predator's optical camouflage is inspired by this phenomenon, fairies look similar to that, just smaller.
> People with significant vision loss may have vivid recurrent visual hallucinations (fictive visual percepts).[4] One characteristic of these hallucinations is that they usually are "lilliputian" (hallucinations in which the characters or objects are smaller than normal).[5]