Anti-reflective coating

When you look at something shiny like a mirror or a window, sometimes you can see your own face or things behind you reflecting in it. This is because the shiny surface is reflecting the light that hits it.

In the same way, your glasses or sunglasses can reflect light too. This can make it harder for you to see clearly or make your eyes tired.

To fix this problem, your glasses can have something called an anti-reflective coating put on them. This is like a special layer that goes on top of the lenses of your glasses.

The anti-reflective coating helps to stop light from being reflected off the surface of the glasses. Instead, it allows more light to pass through the lenses and into your eyes.

This means that you can see more clearly and your eyes won't get as tired when you wear your glasses for long periods of time. It also makes your glasses look less shiny and more clear, so people can see your eyes better when they look at you.