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| the white of th eye; protects the retia; contains eye muscles and episclera |
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| located within the sclera; nourish the retina with oxygen and nutrients |
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| light sensitive tissues in the back of the eyeball; absorbs lights that is sent as visual signals to the brain; contains cones (stronger light) and rods (softer light) |
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| clear gel-like substance filing the eyeball; attached to the retina |
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| closely packed visual sells that result in high image resolution or high visual acuity |
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| most central part of the macula; these are the cones that result in optimal sharpness of vision; rods are just outside |
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| the point where the optic nerve attaches to the eye; all visual messages from cone and rod cells leave the eyeball from this point and are relayed to the optic center of the brain |
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| enables us to change the focus according to different disances; attached to zonula threads |
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| sends signals from the eye to different parts of the brain where the signals are interpreted into images |
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| a hole in the iris; it's black because the layer of pigment inside the eye absorbs major parts of the light, resulting in a darker shade |
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| regulates the amount of light that enters the eye; strong light contracts the pupil and decreases when looking at near objects |
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| fills the front part of the eye, between the lens and the cornea; supplies nutrients and oxygen |
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| transparent structure containing 40 of the eye's 60 diopters |
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| contains the muscle that controls the vision accomodation reflex |
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| mebrane that covers the sclera and the inside of the eyelid |
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