Ocular Physiology

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Across
  1. 2. muscle that controls light entrance; various color
  2. 3. contains layers of light sensitive cell
  3. 6. gives the eyeball its shape
  4. 8. pink inner protective membrane of the eye
  5. 11. dark circle that lets light in
  6. 12. allows cats night vision capabilities
  7. 13. area where there is no light sensitive cells
  8. 15. term used for the ability to see 2 colors
  9. 17. guards against dust
  10. 18. flexible structure that can change shape
  11. 19. a bony cavity that protects the eye
Down
  1. 1. inner eyelid in some species
  2. 4. term used for the ability to see 3 colors
  3. 5. used to perceive color
  4. 7. starts the visual process; tough covering; allows light to bend
  5. 9. carries info from the eye to the brain
  6. 10. keeps the cornea's shape
  7. 14. the eye's white outer covering
  8. 16. keeps the eyes moist
  9. 20. night vision;low light