What is a Vision?

Blurry Vision

Well, that depends on what dictionary you use.

Guess Trinity River Hallucination doesn't have quite the same ring to it.

Dictionary.com has several to choose from.  

a vivid, imaginative conception or anticipation: visions of wealth and glory.

As for synonyms...

2.  perception, discernment. 4.  apparition, phantasm, chimera. See dream.