Chapter 15 Optic (Vision)

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8 Terms

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What cranial nerve carries visual information?

CN II – Optic nerve

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What photoreceptors allow you to see in dim light?

Rods

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What photoreceptors allow color vision and sharp detail?

Cones

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What part of the retina gives you the sharpest vision?

Fovea centralis

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What is myopia?

Nearsightedness (image focuses in front of retina)

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What is hyperopia?

Farsightedness (image focuses behind retina)

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What is presbyopia?

Age-related farsightedness (loss of lens flexibility)

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What causes color blindness?

Missing or nonfunctional cones (usually red or green)