as blind as a bat
idiomPart ofbat
as blind as a bat — idiom
1. Having very poor eyesight, unable to see things clearly.
1.idiom
Definition
Having very poor eyesight, unable to see things clearly.
Example
Without my glasses I am as blind as a bat, so I always carry a spare pair in my bag.
Grandpa is as blind as a bat without his reading glasses, but he refuses to admit it.