'Age' in the Bible

Jeroboam's wife did so, and arose, and went to Shiloh, and came to the house of Ahijah. Now Ahijah could not see; for his eyes were set by reason of his age.

Now the rest of all the acts of Asa, and all his might, and all that he did, and the cities which he built, aren't they written in the book of the chronicles of the kings of Judah? But in the time of his old age he was diseased in his feet.