Parallel
Matthew 6:22
Nestle 1904 Greek New Testament · Berean Standard Bible
Ὁ λύχνος τοῦ σώματός ἐστιν ὁ ὀφθαλμός ἐὰν οὖν ᾖ ὁ ὀφθαλμός σου ἁπλοῦς ὅλον τὸ σῶμά σου φωτεινὸν ἔσται
The eye is the lamp of the body. If your eyes are good (note: Literally If your eye is sound; see Proverbs 22:9), your whole body will be full of light.