What is the origin of the idiom "with one's eyes closed" and when to use it?

The origin of the idiom "with one's eyes closed" is straightforward. It derives from the literal act of closing one's eyes, which naturally impairs vision and awareness. This idiom is typically used to describe someone who is not fully aware or informed about a situation. It conveys the idea that a person is proceeding with little to no knowledge or understanding of the risks, consequences, or details involved in a particular matter.