with one's eyes open

• with one's eyes wide open
• with both eyes open

with one's eyes open

1. (figuratively) Cognizant of any risks involved.

   Those banks, they're big boys. They went into this deal with their eyes open. That's what reserve requirements are for.

• “with your eyes wide open” (US) / “with your eyes wide open” (UK) in Macmillan English Dictionary.
• “with ones eyes open”, in Collins English Dictionary.
• “with your eyes open”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “with your eyes open” in Longman Dictionary of Contemporary English, Longman.
• “with one's eyes open”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.