That's no surprise. Once you get past about 30 or so, you start to shrink. Get into your 40s, and it's enough that your eye's focal point changes to slightly behind your retina, so you have trouble seeing up close (presbyopia). It gets worse as you get older. That's almost universal among humans, and why nearly everybody needs "reading" glasses as they get older. Some people will joking refer to it as their arms getting shorter, because they get to where they can't hold things far enough away to see them.
People like us who are myopic (near-sighted, or can't see far away) have the opposite problem. Their eyeballs are elongated so the eye's focal point is slightly ahead of the retina. If the problem is slight, aging will actually improve it. But, then you eventually run into the problem of lazy corneas. The range of focus narrows. Then, you can't see up close or far away.
Life's a bitch. And then, you die <grin>