Beijing Normal University, Chapter 7, Chapter 12, Section 2, "Receptors and Sensory Organs" (Lesson 1) ppt Think about your eating scene, what did you feel at that time? Can you tell how the above feelings came about? Which part of the body are they from? What do these feelings mean for you to complete your dining activity? 1. Describe the structure of the eyeball and the function of each major component. 2. State the formation process of vision and the causes and correction methods of myopia and hyperopia, and know the prevention methods of myopia. 3. Realize the importance of eyes for understanding the world, consciously cultivate eye hygiene habits, protect eyesight and prevent myopia; at the same time care for and help people with visual impairments.

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