The clear, dome-shaped tissue covering the front of the eye
What is the cornea?
100
The clear, watery fluid inside the eye that provides nutrients.
What is the aqueous humor?
100
The ability to see images and movement outside your direct line of vision
What is peripheral vision
100
Nocturnal animals can see images better than humans in dim light because they have a "bright tapestry" called
What is tapetum
100
Lenses that curve inward and are meant for people that are near-sighted or myopic
What are concave
200
This transmits electrical impulses from the retina to the brain
What is the optic nerve
200
A thick, transparent liquid that fills the center of the eye and gives the eye its form and shape
What is vitreous humor?
200
List three characteristics of a lens
What are: clear, curved, made of different materials, helps focus light, magnifies images
200
When looking through a lens at an image in the distance the image is ______________ (from the Exploring Lenses Lab)
What is upside down or inverted?
200
Someone who can see close up but not at a distance is this
What is nearsighted (myopia)
300
This part of the eye that focuses light on the retina
What is the lens
300
Spot at the back of the eye that is responsible for our clearest/reading vision
What is the macula/fovea
300
This is light made by and object (Sun, light bulb, fire)
What is radiant light?
300
When looking at an object or a scene through a lens, you are looking at an ___________. It is not real; it is a picture or representation of an object.
What is image?
300
Lenses that curve/bulge outward and are meant to be used by people with far sighted or hyperopic vision
What are convex
400
The part of the eye that gives it its color. The center part of this changes size as the amount of light changes. (2 answers)
What are the iris and pupil?
400
These relax to flatten the lens to see things at a distance and contract to round the lens to see things close-up.
What are the cilliary muscles
400
Light that shines on an object and the light bounces off
What is reflected light?
400
The more curvature of the lens, the more _________________ the image
What are the magnified
400
A person that can see far away but cannot see close up is this.
What is far-sighted (hyperopia)
500
The retina contains two types of photoreceptors. ____________ help sense color and fine details and work best in bright light; _____________ help sense light, movement and shape especially in dim lit surroundings. (must be in correct order)
What are cones and rods?
500
The part of the eye at the back of the retina that you cannot "see" an image. (This is where the optic nerve is attached to the retina, therefore not having any photoreceptors to detect an image)
What is the optic disk or blind spot
500
Light that shines through an object (stop light, flash light, hand)
What is transmitted light?
500
Name three pieces of technology that use lenses
What are: telescope, microscope, eye glasses, camera, binoculars, magnifying lens
500
Concave lenses cause light rays to spread apart or _____________ and convex lenses cause light rays to meet at a focal point or _______________