Read About Your Eyes and How They Work and Answer the Following Questions

Name:______Class:______Period_____

Eye Webquest

Cllick on the underlined links to answer the following questions. You may need to use the “continue” button to read more information and find answers.

Read about your eyes and how they work http://kidshealth.org/kid/htbw/eyes.html and answer the following questions.

1. Why do we need eyelashes?

2. What is the sclera?

3. Why does the shape of the lens change?

4. How does the shape of the lens change?

5. Describe vitreous humor?

6. How many rods and cones do you have in each eye?

7. Name 2 things you can do to protect your eyes.

8. Why do our eyes tear?

9. Where are tears made?

Do the experiment are two eyes better than one at the bottom of the page.

Read about different eye problems and what can be done to help. http://kidshealth.org/kid/stay_healthy/body/glasses.html#

10.What does it mean if you are nearsighted?

11. What does it mean to be farsighted?

12. What is astigmatism?

13.What is an ophthalmologist?

14. How do glasses work? View http://health.howstuffworks.com/human-body/systems/eye/eye.htm

Watch the video: Why eat carrots? And do they really help eyesight?

View some great images of the eyes and answer the following questions: (use the “next” button to navigate)

18. What is conjunctivitis?

19.How many muscles control the movement of the eye?

20.Watch the animation of how we see. What does it show?

Now that you are an expert on the eye test your knowledge by taking the eye quiz.

32. What is iris recognition. What is it used for?

33. What is vision therapy?

LASTLY… got to http://www.eschoolonline.com/company/examples/eye/eyedissect.html and complete the dissection of the eye by following the directions given. (if the website doesn’t work, look it up online) Use the virtual eye dissection on the website above to answer the following questions. 1. Hit on Eye Anatomy and define the following parts of the eye by hitting on the individuals parts of the eye. a. Sclera

b. Iris

c. Pupil

d. Muscles

e. Cornea

f. Vitreous humor

g. Lens

h. Blind spot

i. Optic nerve

j. Retina

2. Now GO Through the Virtual eye dissection by cutting and placing the eye part in the correct spot on the table.