Read Luke 11:34 Using Other Translations
The light of the body is the eye: therefore when thine eye is single, thy whole body also is full of light; but when thine eye is evil, thy body also is full of darkness.
Your eye is the lamp of your body. When your eye is healthy, your whole body is full of light, but when it is bad, your body is full of darkness.
“Your eye is a lamp that provides light for your body. When your eye is good, your whole body is filled with light. But when it is bad, your body is filled with darkness.