The curved outer surface of the eye that does most focusing of an image
What is the cornea?
100
The area that can be seen at any given time is called...
the field of vision
100
The liquid in front of the eye that keeps the cornea hydrated and nourished.
What is aqueous humor?
100
The __________________ lets light into the eye.
What is the pupil?
100
The part of a cow's eye that helps them to see better at night.
What is the tapetum?
200
The liquid that cushions and protects the cornea is called
the aqueous humor
200
Peripheral vision is...
Vision that occurs outside the the very center of a gaze (left, right, top, bottom from where a person is looking)
200
What is the jelly-like substance that fills the eye and gives it shape?
Vitreous humor
200
The part of the eye that controls the amount of light that goes into the eye
What is the iris?
200
What is binocular vision?
Two eyes. One eye picks up what the other eye misses due to the blind spot.
300
Explain what the rods do.
They are activated by dim light and are used in peripheral vision.
300
Peripheral vision detects
movement and motion information.
300
Explain how the lens works.
The lens is a clear, curved object. Light passes through it. The lens bends the light so that it comes together at one point (the focus). When the light rays come together, they form an image.
300
The part of the eye that converts light energy into electrical impulses
What are photoreceptors?
300
Explain how the tapetum works.
It allows light to pass (reflect) through the retina twice.
400
a tough white cordlike structure connected to the back of the eye, takes electrical signals to the brain
optic nerve
400
The greatest point of focus and the highest concentration of cones is located in the
Fovea and macula
400
Refraction means
bended light
400
Describe cones and their function.
Triangular, very responsive to bright light, can distinguish color and detect details of objects
400
A delicate translucent tissue that covers the back half of the inside of the eye
What is the retina?
500
The fovea is
the small depression that contains only cones and has the highest sensitivity to color and detail.
500
What is the blind spot?
where the retina and the optic nerve connect. no photoreceptors here
500
Explain how the retina works.
An image projects on the retina. In the retina, photoreceptors transform the light energy into electrical impulses that travel to the brain via the optic nerve.
500
List the parts in order that light travels through on its way to the retina.
cornea, aqueous humor, pupil, lens,vitreous humor
500
The part of the brain that processes light from the retina and optic nerve