Prism dioptre

Okay, so let's imagine that you are looking at a piece of paper and you really want to focus on it, but it keeps looking blurry or double. This can happen when your eyes aren't working together very well.

Now imagine that there is a special tool that can help your eyes work together better by bending the light that goes into your eyes. This tool is called a prism dioptre.

A prism dioptre is like a tiny piece of glass that has a triangular shape, kind of like a slice of pizza. When you put it over one of your eyes, it bends the light that goes into your eyes in a way that helps your brain better understand what you are looking at.

It's kind of like when you look through a magnifying glass and things look bigger - a prism dioptre makes things look clearer and less blurry.

Now sometimes, doctors will tell you that you need a certain number of prism dioptres to help your eyes work better. This is because everyone's eyes are different, and some people need more help than others.

So, to sum it up - a prism dioptre is a special tool that helps your eyes work together better by bending the light that goes into them. And doctors use it to help people see things more clearly and less blurry.