Unit 5 Lt 3 Flashcards

1
Q

Fibrous Layer (Outermost)

A

Contains the sclera (white part of eye) and the cornea (transparent)

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2
Q

Vascular layer (middle)

A

Contains the choroid, blood vessels, iris, and lens

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3
Q

Inner layer

A

Contains the retina and optic nerve

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4
Q

Aqueous Humor

A

Fluid between the cornea and the lens

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5
Q

Cornea

A

Transparent outer circle on the anterior portion of the eye

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6
Q

Iris

A

Colored ring of tissue that contains muscle that adjusts the size of the pupil

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7
Q

Lens

A

Focuses light onto the retina

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8
Q

Pupil

A

Black hole in the center of the iris

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9
Q

Optic nerve (disc)

A

bundle of nerve fibers that carry information from the retina to the brain

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10
Q

Retina

A

light-sensitive layer of tissue containing photoreceptor cells

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11
Q

Sclera

A

The white outer layer of the eye

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12
Q

Vitreous humor

A

jelly-like fluid that fills the inside of the eye from the lens to the retina

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13
Q

Light passing

A

Cornea
Aqueous humor
Iris/Pupil
Lens
Vitreous humor
Retina

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14
Q

Rods

A

detect objects in dim light (night vision)
black and white

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15
Q

Cones

A

Detect object in bright light (night day vision)

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16
Q

Hyperopia

A

Far sighted
images show up behind the retina, eye is too short

17
Q

Myopia

A

near sighted
imaged show up in front of the retina - eye is too long

18
Q

Astigmatism

A

Old sighted
lens looses its aility to focus on object - cant see up close