Sankaku Channel/empty eyes

This tag refers to situations where the eyes aren't given the customary glint or light spots, or are colored with a solid dull flat shading. This usually indicates the bearer is either expressing a vacant stare, or is unconscious or otherwise "not all there" at the moment. This technique, in its most extreme form, has been used in anime to indicate:

• A character dying,
• A character is blind
• In most hentai, a character's will being broken, usually while being raped.
• Possessed or otherwise not themselves.
• A character has no emotion, either because they are an artificial being, because of magical abilities, generally because they are a seer