Light enters the eye through the ____________________

• Pupil

• Retina

• Rods

• Optic Nerve

Being able to see a candle flame 30 miles away on a clear night is the

• absolute threshold for human vision

• difference threshold for human vision

• perceived threshold for human vision

• white or gray, depending on the object’s reflectivitycanca

Regulates the amount of light entering the eye and gives the eye its color.

• Iris

• Pupil

• Lens

• Retina

The clear membrane that covers the front of the eye.

• Lens

• Iris

• Pupil

• Cornea

What is Letter B?

• Optic Nerve

• Lens

• Cornea

• Retina

What is Letter G?

• Sclera

• Lens

• Retina

• Rods

This part of the eye carries the message from your eye to the part of your brain that controls vision. 

• Cornea

• Optic Nerve

• Lens

• Retina

Which of these is true?

• Cone cells detect light and dark

• Cones detect color

• Rods focus light

• Rods detect color

Where does the optic nerve take the visual information?

• To the Thalamus and then to the Occipital Lobe

• to the Hypothalamus and then to the Occipital Lobe

• to the Hippocampus and then to the Occipital Lobe

• to the Cerebellum and then to the Occipital Lobe

Proposed theory for color vision with cones that are differentially sensitive to different wavelengths of light. 

• Opponent Process Theory

• Trichromatic Theory