Genesis 27:1
1 When Isaac was old and his eyes were so weak that he was almost blind, he called his older son Esau and said to him, “My son!” “Here I am!” Esau replied. 2 Isaac said, “Since I am so old, I could die at any time. 3 Therefore, take your weapons—your quiver and your bow—and go out into the open fields and hunt down some wild game for me.
Deuteronomy 34:7
6 He buried him in the valley in the land of Moab near Beth Peor, but no one knows his exact burial place to this very day. 7 Moses was 120 years old when he died, but his eye was not dull nor had his vitality departed. 8 The Israelites mourned for Moses in the rift valley plains of Moab for thirty days; then the days of mourning for Moses ended.
1 Samuel 3:2
1 Now the boy Samuel continued serving the Lord under Eli’s supervision. Receiving a message from the Lord was rare in those days; revelatory visions were infrequent. 2 Eli’s eyes had begun to fail, so that he was unable to see well. At that time he was lying down in his place, 3 and the lamp of God had not yet been extinguished. Samuel was lying down in the temple of the Lord as well; the ark of God was also there.
Notes and References
"... This section is J. It notes that Moses lives to be one hundred twenty years old, which is the limit that YHWH sets on human life in J (Genesis 6:3). It notes that his eye was not dim; and the expression that it uses for the dimming of the eye occurs only here and in Isaac's blessing of Jacob in Genesis 27:1, which is J, and in the report of Eli's dim eyes in 1 Samuel 3:2 (which, I have argued elsewhere, comes from the same author) ..."
Friedman, Richard Elliott The Bible with Sources Revealed: A New View Into the Five Books of Moses (p. 368) Harper San Francisco, 2005