眼睛如何工作

描述眼睛如何工作：光线通过瞳孔进入眼睛，晶状体将光线聚焦到眼球后方的视网膜上，视网膜再将信号沿视神经传送到大脑，由大脑解读成图像。

Describe how the eye works: light enters through the pupil, the lens focuses it onto the retina at the back of the eye, and the retina sends signals along the optic nerve to the brain, which interprets the image

学习证据 / Evidence

• 说出主要部位：瞳孔（让光线进入）、晶状体（聚焦光线）、视网膜（检测光线）、视神经（将信号传递给大脑）。
• 描述顺序：光线进入 → 晶状体聚焦 → 视网膜检测 → 视神经向大脑传递信号 → 大脑解读图像。
• 解释瞳孔在暗光下会变大，在亮光下会变小，用来控制进入眼睛的光量。

• Name the main parts: pupil (lets light in), lens (focuses light), retina (detects light), optic nerve (sends signals to brain)
• Describe the sequence: light enters → lens focuses → retina detects → nerve signals brain → brain interprets image
• Explain that the pupil gets bigger in dim light and smaller in bright light to control how much light enters

评估问题 / Assessment

{{name}}能说说自己看东西时眼睛内部发生了什么吗——光线怎样通过瞳孔进入，大脑又是怎样把它变成一幅画面的？

Can {{name}} explain what happens inside their eye when they look at something — how light comes in through the pupil and the brain turns it into a picture?