Our eyes are shaped like a small ball. The front part of the eye has a coloured circle: the iris and a smaller black circle: the pupil.
The pupil lets in light, like a window, so that we can see. Structures inside the eye focus light so that we can see clearly. The eyelid helps to protect the eye and keep out light when we sleep. Tears carried by the eyelid across the eye, wash away dirt and help keep our eyes clean. That is why we blink. Eyelashes help to keep out dust, dirt and flies.
Can you see clearly? What do/would people in your family do if they cannot see clearly?