Chromatism and Visual hallucination

Chromatism noun - Hallucinatory perception of colored lights.

Visual hallucination and chromatism are semantically related. In some cases you can use "Visual hallucination" instead a noun "Chromatism".

Visual hallucination noun - Illusory visual perception.

Chromatism and visual hallucination are semantically related. Sometimes you can replace term "Chromatism" with "Visual hallucination", this terms are similar.