1. Chapter 12 Review Light and Vision

2. Category: The Eye Give the name and function of the eye part indicated by #3 (the thin layer between #1 and #2). 1 2 3 4 5 6 7 8

3. What are the secondary light colours? Category: Colour Vision

4. What makes the pupil smaller or bigger? Why? 4 Category: The Eye

5. Which of the following can be corrected using laser eye surgery: myopia, hyperopia, astigmatism, presbyopia? 5 Category: Vision and Vision Problems

6. What does it mean if someone has myopia? 6 Category: Vision and Vision Problems

7. What is the name of the jelly-like substance that fills the eye between the lens and retina and what is its function? 7 Category: The Eye

8. What is a blind spot? 8 Category: The Eye

9. Explain what changes occur in the eye when you enter a dark room after being out in the bright sunshine.

10. What is the complementary light colour of magenta? Category: Colour Vision

11. What is normal vision? What is 20/50 vision? What is 20/15 vision? 11 Category: Vision and Vision Problems

12. Name one reason why a person might have myopia. Where is the clear image formed in a myopic eye? 12 Category: Vision and Vision Problems

13. When you combine all three primary colours, what is produced? 13 Category: Colour Vision

14. Category: The Eye What is the name and function of the fluid found between the cornea and lens?

15. Why is a convex lens used to correct hyperopia? 15 Category: Vision and Vision Problems

16. What colour of light would be created if blue light overlaps with green light? Category: Colour Vision

17. What is the difference between LASIK and PRK laser eye surgery? Category: Vision and Vision Problems

18. What three colours are the cones in your retina sensitive to? Category: Colour Vision

19. What chart is used to compare a person’s vision with normal vision? 19 Category: Vision and Vision Problems

20. Why do people start to suffer from presbyopia later on in life? 20 Category: Vision and Vision Problems

21. What is the purpose of the sclera? 21 Category: The Eye

22. What are complementary light colours? Category: Colour Vision

23. Where is the image produced in the eye and what is its attitude and type? 23 Category: The Eye

24. What two eye parts are mainly responsible for focusing light onto the retina? Which of the two does about 80% of the refraction? 24 Category: The Eye

25. What colour do we see when light containing only red and green wavelengths enters our eyes? Category: Colour Vision

26. What colour would you see if an equal number of red and blue cones in your eyes were activated? Category: Colour Vision

27. What is the complementary light colour of blue? Category: Colour Vision

28. Category: The Eye Give the name and function of the eye part indicated by #8. 1 2 3 4 5 6 7 8

29. What refractive vision problem is often caused by the eye being too short? Where is the clear image formed in this case? 29 Category: Vision and Vision Problems

30. Explain how you focus on distant objects. Include how light rays are entering the eyes. 30 Category: The Eye

31. Explain what you would see if you looked at a bright red circle for a long time then looked at a white surface. Why? Category: Colour Vision

32. What is astigmatism and what causes it? 32 Category: Vision and Vision Problems

33. What does it mean if someone has a refractive vision problem? 33 Category: Vision and Vision Problems

34. What is red-green colour blindness and why does it occur? Category: Colour Vision

35. Category: The Eye Give the name and function of the eye part indicated by #4. 1 2 3 4 5 6 7 8

36. Explain how you focus on nearby objects. Include how light rays are entering the eyes. 36 Category: The Eye

37. What type of lens is used to correct myopia? Why? 37 Category: Vision and Vision Problems