辣眼睛 là yǎn jīng

辣眼睛
là yǎn jīng
辣:spicy.
眼睛: eyes.
辣眼睛 describes the feeling when
something ugly or unpleasant
“irritates” your eyes and you
can’t even look at it. The feeling is
just like when your eyes burn
from cutting into spicy onions.

这幅画真辣眼睛。zhè fú huà zhēn là yǎn jīng 。
The picture is such an eyesore.
Eyesore
lit eyes getting irritated by something spicy

切洋葱辣眼睛
Slicing an onion makes the eyes sting.
辣眼睛 original means something irritates your eyes and thus you could not bear seeing it.
It also means some internet pictures or scenes that is so disgusting you can’t even look at it.