Hold your head straight and look straight in front of you. Now, without moving your head, look over here. Yes, the eyes have eye muscles that move your eyes from side to side and up and down and around without moving your head. Let's try that. Some people cannot see things as well as other people.
Young people can usually see better than older people.
When they have trouble seeing things that are close but can see things that are far away easily, they are called farsighted. When the opposite happens, and they can't see things that are far away but can see things that are near, they are called nearsighted. Wearing glasses helps correct seeing problems. Organizing the Idea Students complete Activity - Colorful Eyes. Discuss and compare the class graph with that of another class.