I found this aphorism in my book of Korean aphorisms.
바늘 구멍으로 하늘 보기 ba.neul gu.meong.eu.ro ha.neul bo.gi needle hole-THROUGH heaven see-PART [It's like] seeing heaven through the eye of a needle.
This refers to a narrow-minded person. Perhaps it could be similar to English’s “tunnel vision.”
