Brock string

A brock string is a tool used to help people with visual problems. It's made up of a string with some colored beads on it. Imagine holding one end of a piece of string and having someone else hold the other end. Now imagine that there are some different colored beads along the string. When you look at the string, you can see each of the beads in a different place along the string.

Now, the idea is that when you look at the string, your eyes should be able to focus in a way that allows you to see each bead in a specific spot on the string. That means your eyes are working together as a team. If your eyes aren't working together, you might see two beads in the same spot or one might be fuzzy or disappear. But if your eyes are working well, you'll be able to see each bead in a different spot.

By practicing with the brock string, you can train your eyes to work together better. There are different ways to use the brock string to improve your vision, but one common method is to focus on one bead, then move your eyes to another bead along the string, and repeat. This helps your eyes learn to work together and focus on different things at different distances.

Overall, the brock string helps people improve their visual skills and promotes better eye coordination.