μονόφθαλμοςmonóphthalmos

Same root

• μόνοςmónos · G3441remaining, i.e. sole or single; by implication, mere
• ὀφθαλμόςophthalmós · G3788the eye (literally or figuratively); by implication, vision; figuratively, envy (from the jealous side-glance)

Where it appears

Appears 2 times in the Bible.

• Matthew 18:9 And if your eye causes you to sin, gouge it out and throw it away. It’s better to enter eternal life with only one eye than to have two eyes and be thrown into the fire of hell.
• Mark 9:47 And if your eye causes you to sin, gouge it out. It’s better to enter the Kingdom of God with only one eye than to have two eyes and be thrown into hell,