Eyes

Explores the evolution of sight organs from the light-sensing spot in the one-celled euglena to the human eye. Shows how different species have developed sight organs uniquely suited to their life style, using special lenses on the camera to show how these different species may see the world. Provides an in-depth explanation of the human visual system and explains how science and technology can correct defects and increase the range of vision., Explores the evolution of sight organs from the light-sensing spot in the one-celled euglena to the human eye. Shows how different species have developed sight organs uniquely suited to their life style, using special lenses on the camera to show how these different species may see the world. Provides an in-depth explanation of the human visual system and explains how science and technology can correct defects and increase the range of vision.