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science > eye unit > Flashcards

eye unit Flashcards

1
Q

sclera

A

white part of the eye
- protects insides

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2
Q

cornea

A

layer around the colored part of eye + pupil
protective layer
traps light

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3
Q

pupil

A

hole in the eye
changes size by light taken in
small - light
big - dark

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4
Q

iris

A

colored part of eye
- muscle that controls size of pupil
- the color is genetic pigment

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5
Q

lens

A

behind the iris
captures images
upsidedown

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6
Q

retina

A

inside the schelra
area is protected

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7
Q

optic nerve

A

brings image/message to the brain

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8
Q

whats the retina made up off

A

two types of cells
- cones
a) allows to see color
- rods
a) allow to make out an image

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9
Q

whats colorblindness

A

difficulty seeing certain colors
red and green
yellow and blue

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10
Q

choroid coat

A

in between schlera and retina
blood vessels provide nutrients

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11
Q

Conjunctiva

A

Keeps your eye moist
Made up of mucus

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12
Q

vitreous humor

A

fluids keeep eye in shape

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13
Q

ciliary body

A

keeps eye in place

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14
Q

muscle

A

located around eye to work together to move

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15
Q

lazy eye

A

one lazy looks around when other looks straight

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16
Q

Gluacoma

A

Too much pressure in the eye
If not treated, will cause blindness because it will block the optic nerve

17
Q

Cataracts

A

Gradual filmy layer forming around the lens
Gradual difficulty seeing
A procedure and help it

18
Q

Myopia

A

Near sightness
Difficulty seeing far away
Eye too long, so image focuses in front of the retina
Corrected with lenses

19
Q

Hyperopia

A

ar sightedness
Difficulty seeing close; need glasses for reading
Eye too short, so impage focuses behind the retina
Corrected with lenses

20
Q

Asigmatism

A

Cornea not shaped corrected
Light is not able to be trapped correctly
Everything seems blurry
Corrected with lenses

21
Q
A

science (8 decks)

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