The Science of Seeing

Question 1

What are the Parts of the Eye

Answer 1

1. Cornea
2. Pupil
3. Iris
4. Crystalline lens
5. Retina
6. Optic Nerve
7. Blind Spot
8. Fovea

Question 2

What is the Cornea

Answer 2

This is the Transparent dome like structure on the front of the eye, it gives the focusing or refracting power

Question 3

What is the Pupil

Answer 3

It is the adjustable opening in the center of the eye through which light enters, it controls the amount of light that enters into the eye

Question 4

What is the Iris

Answer 4

The colored tissue at the front of the eye that contains the pupil in the center, it controls the size of the pupil

Question 5

What is the Crystalline Lens

Answer 5

This is a transparent structure behind the pupil, it allows and helps the eye to focus on far and near objects

Question 6

What is the Retina

Answer 6

This is at the back of the eye, it has photoreceptors that absorb light and transmits those signals through the optic nerve to the brain

Question 7

What are Photoreceptors

Answer 7

It has the Rods and Cones, it converts light energy to signals and sends them to the brain

Question 8

What are Cones

Answer 8

These are light detecting cells, they function in daylight or well lit conditions, they are directly involved in our ability to perceive color

Question 9

What are Rods

Answer 9

These are specialized photoreceptors that work well in low light areas, they help our vision in dimly lit environments

Question 10

What is the Optic Nerve

Answer 10

This is the nerve that carries neural impulses from the eye to the brain

Question 11

What is the Blind Spot

Answer 11

This is the point at which the optic nerve leaves the eye, it creates a blind spot because no receptor cells are located there

Question 12

What is the Young Helmholtz Trichromatic (three color) Theory

Answer 12

It says that there a 3 receptors in the retina responsible for perception of color (green, blue, red)

Question 13

What is Color Deficient Vision (Color Blindness)

Answer 13

This is when you lack functioning red or green-sensitive cones or sometimes both. It is related to the Y chromosome.

Question 14

What are the Chromatics

Answer 14

1. Monochromatic (one color)
2. Dichromatic (two-color)
3. Trichromatic (three color)

Question 15

What is Opponent Process Theory

Answer 15

It says that the retinal process only occurs in 3 sets of opponents

1. red-green complex
2. blue yellow complex
3. black white complex

Question 16

What is Afterimage

Answer 16

This is the continuation of a visual sensation after the removal of the stimulus

Question 17

What are Feature Detectors

Answer 17

These are specialized neurons in the visual cortex that react to the strength of visual stimuli responding to shapes, angles, edges, lines, and movement in the field of vision

Question 18

Parallel Processing

Answer 18

This is the brain’s ability to do many things at once