blind as a bat
眼盲，指一個人非常近視或視力非常差
口語·形容視力極差
英文釋義
having extremely poor or no vision
例句
Without my glasses, I'm blind as a bat and can't even read the menu.
典故來源
源自蝙蝠視力極差的特性，但實際蝙蝠靠回聲定位，此習語夸張地形容人視力極差。