眼睛

You need to have eyes in the back of your head to be a teacher.

The eyes are blurred with tears.

One's eyes were bloodshot from lack of sleep. / One's eyes have been red with fatigue.

bloodshot eyes

see with a sweep of the eyes

have a discerning eye

be blind

have sunken eyes

open one's eyes

blink/wink one's eyes; bat one's eyes

rub/scrub one's eyes

narrow one's eyes; squint/slit one's eyes

cry one's eyes out; weep till one's eyes are swollen

try one's eyes

goggle one's eyes; be saucer-eyed

shut/close one's eyes

a pair of big eyes