night vision; seeing in the dark
Most commonly used in the set phrase 夜目が利く (to have good night vision). Rarely used alone.
See also: 夜目が利く
Cats have good night vision.
I can't see well in the dark, so dark roads are dangerous.
looking better in dim light or from afar
Standard kanji spelling.
Rarely used kanji form; 眼 explicitly means 'eye'.
Compound of 夜 (night) and 目 (eye). The exact historical derivation is uncertain, but the meaning is transparent.