Adolf Eugen Fick was a man who lived a long time ago and learned a lot about how our eyes work. Your eyes are very important because they help you see things like your toys, your friends, and your family. Adolf Eugen Fick studied how your eyes can focus on things that are near or far away.
When you look at something up close, like a book, your eye muscles have to work hard to change the shape of your eye so you can see the letters clearly. When you look at something far away, like a tree outside, your eye muscles relax and your eye changes shape so you can see the tree clearly.
Adolf Eugen Fick was very smart and figured out what happens when you put a special, tiny piece of glass in front of your eye. This piece of glass is called a contact lens. The contact lens helps your eye focus so you can see things clearly. It's like putting a magnifying glass in front of your eye, but it's much smaller and stuck to your eye.
Thanks to Adolf Eugen Fick, many people today wear contact lenses to help them see better. He was a very important man in the world of eye care and helped many people with vision problems.