摘要
我们都知道人类有五种感官。我们很多人相信我们用眼睛看东西。实际上,我们的眼睛和大脑都是用来看东西的!物体反射出的光通过角膜和瞳孔以直线方式进入我们的眼睛。光线通过眼球的晶状体,聚焦在眼睛后部,将倒立的图像投射到视网膜上。视网膜中的光感受器将图像转换成电子脉冲,电子脉冲沿着视觉神经进入大脑。然而,我们有时看东西时有盲点。你知道吗?盲点是视网膜上没有对光作出反应的受体区域。因此,落在此区域的图像将不会被看到。正是在这个区域,视神经在进入大脑的过程中离开眼睛。要找到你的盲点,请查看下面的图像或将其绘制在一张纸上.
We all know that humans have five senses.And many of us believe that we see with our eyes.Actually,our eyes and brain are both used to see!Light reflected off objects travels in a straight line into our eyes through the cornea and the pupil.The light travels through the lens,which focuses on the back of the eyes,projecting an upside-down image onto the retina.Photoreceptors in the retina translate the image into electrical impulses,which travel along the optic nerve and into the brain.However,we sometimes have blind spots when we see.Do you know that?
