[derllak]

To me, a “blind eye” means you see it but CHOOSE not to acknowledge it.

Not that you don’t see it.

[dr_lew]

To me, a “blind eye” means you see it but CHOOSE not to acknowledge it.

As I said, it's the "turning" of the "blind eye" that indicates this in the proverbial statement, but in fact people are often truly "blind" to facts of their own situation that may be instantly obvious to disinterested observers.