[ White Light Red Light Green Light Blue Light.

[http://www.olympusmicro.com/primer/lightandcolor/images/primarycolorsfigure3.jpg]

White Light

Red Light

Green Light

Blue Light

The EyeThe Eye

• Light passes through the pupil (black part) and lens then focuses on the retina on the back of the eye.

The EyeThe Eye

• The retina is made up of cells called rods and cones which take the light and send signals to the brain.

The EyeThe Eye

• Rods are sensitive to dim light and useful for seeing at night.

• Sometimes cause an “afterimage” to appear from bright or prolonged light.

Click here for Afterimage Demonstrations

The EyeThe Eye

• Cones are responsible for colors and shapes of objects.– 3 types:

•Red (Red Yellow)•Green (Yellow Green)•Blue (Blue Violet)

[http://upload.wikimedia.org/wikipedia/en/thumb/d/d6/1Mcolors.png/600px-1Mcolors.png]

The EyeThe Eye

• Color Blindness occurs when the cones do not properly distinguish colors of light.

• 8% of men• 0.5 % of women

Click for color palate demonstration

Click for color changing demonstration

25

29

45

56

6

8

Normal

Protanomaly (Weak Red)

Deuteranomaly (Weak Green)

http://members.shaw.ca/hidden-talents/vision/color/pics/rose-gw.jpg

Normal

http://members.shaw.ca/hidden-talents/vision/color/pics/rose-gw.jpg

Protanopia (No Red)

Deuternopia (No Green)

Normal

  Protanope 

Deuteranope