How Does Our Vision Work? WebQuest

Go to: https://nei.nih.gov/photo/anatomy-of-eye

Label the following parts on the diagram of the eye:

Lens Iris Pupil Cornea Vitreous Humour

Retina Sclera Optic Nerve

Go to: http://www.kellogg.umich.edu/patientcare/conditions/anatomy.html

Describe the function of each part of the eye you just labeled:

a. Lens

b. Iris

c. Pupil

d. Cornea

e. Vitreous Humour

f. Retina

g. Sclera

h. Optic Nerve

Use the same website to answer the following:

1. Explain the sequence of events that happen when light hits our eye.

2. How are our eyes like a camera?

Go To: http://faculty.washington.edu/chudler/chsense.html and answer the questions/perform the tasks that follow.

Click on the picture of the eye (vision) and scroll down and try out the various blind spot activities.

Why do humans have blind spots?

Go To: https://sites.google.com/site/msharwoodsocialstudies/after-images

Follow the instructions in this demonstration. What happened?

What happens in your eye that causes the “after image” to appear?

Go To: http://www.optics4kids.org/home/content/illusions/

How do optical illusions work?

View 3 of the optical illusions. In the space below, record what you see AND what is actually there.

1.

2.

3.

Go To: http://www.cdc.gov/visionhealth/basics/ced/index.html

Fill in the chart on the next page as you read