As you get old not only your skin, hair, and etc get old. Your eyes when you reach the 45 y/o usually your reading vision reduces and not only that. But that's 1 thing lol
As we get older, the shape of our eye-ball becomes less spherical with low focus point, means, it feels trouble in having image formation at specific point on the Retina, so in short, the efficiency/ Proper functioning of our eyes get reduced.
