The Visual System: Seeing the World in Color

The black center of the eye that allows in light is called the ______.

• Lens

• Retina

• Pupil

• Cornea

Which condition is described as having difficulty seeing far objects clearly?

• A) Nearsightedness

• B) Farsightedness

• C) Astigmatism

• D) Color blindness

Farsightedness is a condition where far objects look clear but close objects look blurry. True or False?

• True

• False

Which type of receptor cell is responsible for color vision?

• Rods

• Cones

• Ganglion cells

• Bipolar cells

How many cones are typically found in the human retina?

• 6 million

• 120 million

• 1 million

• 10 million

Cones have high sensitivity to _______.

• dim light

• color

• detail

• both B and C

What is the primary role of rods in the visual system?

• To detect color

• To see in low light

• To focus light

• To produce tears.

What effect does constant eye movement have?

• It causes fatigue

• It improves vision

• It enhances hearing

• It sharpens taste

Which of the following is NOT a type of cone on our retina?

• A) Blue

• B) Green

• C) Yellow

• D) Red

What happens to the _______ color neuron when you focus on a specific color for a long time?

• same

• opponent

• adjacent

• primary