- Understanding why humans have two eyes.
- Being able to name the most important structures in the eye and tell how light travels in the eye.
- Being able to describe how the eye adapts when looking close and far.
- Knowing how the most common refractive errors are fixed.
- Binocular vision allows a person to distinguish distances.
- The cornea and lens refract light on the retina.
- The iris regulates the amount of light entering the eye.
- In the retina, sensory cells become irritated and carry information as impulses along the optic nerve to the brain.
- Visual perception occurs in the brain.
- Refractive errors can be corrected with glasses.
- Keywords: vision, binocular vision, lens, retina, optic nerve, refractive error.
