Trace the path of light through the eye to the point of the optic nerve

Vision is the ability to detect light patterns from the outside environment and interpret them into images. Animals are bombarded with sensory information, and the sheer volume of visual information can be problematic. Fortunately, the visual systems of species have evolved to attend to the most-important stimuli. The importance of vision to humans is further substantiated by the fact that about one-third of the human cerebral cortex is dedicated to analyzing and perceiving visual information.

What You’ll Learn to Do

• Explain how electromagnetic waves differs from sound waves
• Identify the structures found in an eye
• Trace the path of light through the eye to the point of the optic nerve
• Identify the parts of the brain associated with vision

Learning Activities

The learning activities for this section include the following:

• Light
• Anatomy of the Eye
• Transduction of Light
• Vision in the Brain
• Self Check: Vision