Vision and Color Perception Quiz

What does 20/20 vision mean?

• Normal vision

• Legally blind

• Double the normal vision

• Better than normal vision

How many photoreceptor cells per square millimeter of retina do eagles have compared to humans?

• 2 million

• 200,000

• 1 million

• 500,000

What is the condition in which nearby objects are seen more clearly than distant objects?

• Blindsight

• Presbyopia

• Farsightedness

• Nearsightedness

What is the process by which the eye's lens changes shape to help focus near or far objects on the retina?

• Neural impulse

• Transduction

• Accommodation

• Bipolar cells

What is the point where the optic nerve leaves the eye due to the absence of receptor cells?

• Ganglion Cells

• Optic Nerve

• Blind Spot

• Fovea

What is the condition that affects the optic nerve and involves loss of retinal ganglion cells in a characteristic pattern?

• Blindsight

• Cataracts

• Visual Amnesia

• Glaucoma

What is the term for the inability to tell the difference between parked cars and moving cars?

• Blindsight

• Visual Amnesia

• Tetrachromat

• Colorblindness

According to the Young-Helmholz Trichromatic theory, how many colors can be seen when the three receptors sensitive to red, blue, and green are combined?

• 3 million

• 7 million

• 10 million

• 15 million

If three primary colors (pigments) are mixed, what is the result?

• Red

• Yellow

• White

• Black

According to opponent process theory, what causes a negative afterimage?

• Thalamic processing

• Visual cortex processing

• Retinal processing

• Neural fatigue