The rods and cones that make up the human retina may also channel light via total internal reflection. 组成人眼视网膜的视网膜杆和视网膜锥也可以通过全内反射传导光。
Use a total internal reflection fluorescence microscope to observe, the latter can be sent to filter out the background fluorescence. 这里用全内反射荧光显微镜来进行观察，就可以把后者发出的背景荧光过滤掉。
