be as blind as a bat

(humorous)

to be completely blind I'm as blind as a bat without my glasses.

Name	Pronounced	Usage
Gordan	GOR-dahn (Serbian, Croatian)	Serbian, Croatian, Macedonian
Chatzkel	-	Yiddish
Despina	-	Greek, Macedonian
Caietanus	-	Late Roman
Bird	[bə:d]
Scott	[skɔt]