「瞑幻」は目を閉じても夢に似た支離滅裂な映像（幻覚）が鮮明に見えてしまって眠れなくなる病で、造語です。

'Meditative hallucination' is a term coined to describe a condition in which, even when the patient closes their eyes, they are unable to sleep due to vivid, incoherent images (hallucinations) that resemble dreams.