Today, Maddie is finding out how wearing glasses helps us to see more clearly. She visits an optician to see how an eye test works by having one herself. She reads the charts and shapes on the wall and looks into a special camera that takes a picture of the back of our eyes to make sure they are healthy. Then, Maddie shows us how glasses frames are made by shaping gold wire at a factory. Maddie uses a special microscope camera to show us the ant-sized screws that hold glasses together!