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12 Cards in this Set
- Front
- Back
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Sclerotic layer? |
White protective layer of eye |
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Fovea? |
Part of retina containing most cone (colour sensitive) cells |
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Optic nerve? |
Originates from back of eye (at blind spot) and carries nerve impulses to optic lobe of the brain |
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Vitreous humour? |
Clear gel filling back chamber of eye |
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Aqueous humour? |
Clear liquid filling front chamber of eye |
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Retina? |
Inner layer of light sensitive cells (rod and cones) and nerve fibres |
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Iris? |
Pigmented structure of radial and circular muscles with a central hole ; the pupil |
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Lens? |
Transparent bi-convex structure which focuses light rays on retina |
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Ciliary body (+ ciliary muscle) ? |
Body of blood vessels and muscle fibres (ciliary muscle) controlling shape of lens |
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Choroid layer ? |
Dark pigmented layer of cells and blood vessels inside the sclerotic layer Reduces internal reflection inside eyeball |
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Cornea? |
Transparent window at front of eye continuous with sclerotic layer |
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What are the light sensitive cells of the retina? |
Rods - not sensitive to colour ; found throughout retina Cones - sensitive to colour ; concentrated in region of the fovea |
