Pupilometer

A pupilometer is like a ruler for measuring the size of your eyes. Your eyes have a little black hole in the center called your pupil. This is where light comes into your eye. The pupilometer helps the eye doctor measure how big your pupils are. This helps the doctor see if your eyes are working properly. It's like measuring your height or weight when you go to the doctor. It's important to check how big your pupils are because they can change size for different reasons, like when it's dark outside or when you're feeling certain emotions.