have blinders on

have blinders on

To be oblivious to something that exists or is happening right around one. ("Blinders" are pieces of leather that are used to limit a horse's peripheral vision.) I must have blinders on when I walk around town because I didn't notice any of those new businesses that are opening.
See also: blinder, have, on
References in periodicals archive ?
Our sales people don't have blinders on and aren't told how to sell and the way to sell it," says Sherrman.