'Eye' in the Bible

You must not show pity; the principle will be a life for a life, an eye for an eye, a tooth for a tooth, a hand for a hand, and a foot for a foot.

The Lord found him in a desolate land, in an empty wasteland where animals howl. He continually guarded him and taught him; he continually protected him like the pupil of his eye.

Moses was 120 years old when he died, but his eye was not dull nor had his vitality departed.