As our children grow, nearly all of the changes they go through are visible to us. Yesterday their clothes fit just fine, today they are too small. They need new shoes, they need a hair cut.
If a change isn't visible, it can be easily overlooked. Our eyes actually grow and change over time as well. If they didn't we'd look pretty funny with tiny eyeballs in a larger head.
As we grow, the eye expands in diameter and that can change how we see things. So, if you notice that your child has experienced a recent growth spurt, there are some things you can look for to signal if their vision is also changing.