Exploration Of The Human Eye Flashcards

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0
Q

Lens

A

Transparent tissue that vends light passing through eye

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1
Q

Cornea

A

Transparent tissue covering eye

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2
Q

Iris

A

Circular band of muscle that controls eye size

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3
Q

Vitreous humour

A

Jelly-like substance that makes the eye maintain its shape

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4
Q

Retina

A

Sensory tissue that focuses eye and responds to light

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5
Q

Optic nerve

A

carries visual signals to the brain

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6
Q

Fovea

A

Central retina and focused vision

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7
Q

Rods

A

Vision at low light levels

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8
Q

Cones

A

Deals with details and colors

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9
Q

Where are cones and rods located?

A

Retina

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10
Q

What do rods help you see

A

Low light levels

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11
Q

What do cones help you see

A

Higher light levels

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12
Q

Myopia

A

Nearsighted

When light focuses in front of the retina

Longer eye & steeper cornea

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13
Q

Hypermetropia

A

Farsighted

Focuses behind retina

Shorter eye

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14
Q

Astigmatism

A

Light focuses are more than one part

Cornea is oval

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15
Q

Color blindness

A

Trouble discriminations some colors, hereditary disorder

16
Q

Far point

A

Farthest point the eye can focus on

17
Q

Near point

A

Closest ping the eye can see (around 25cm)