Visual pathway - 3) activation the same c) rods and cones...

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Vision a) refraction- bending of light caused by changing media 1) myopia- nearsighted 2) hyperopia- farsighted 3) astigmatism- blurred vision near and far due to unequal curvature of cornea Physiology of vision 1) convert image from the retina to brain a) rods- sensitive to little light, night vision, not sensitive to color, share common nerve fibers to brain b) cones- not share routes to brain, images sharper, sensitive to color 1) contain retinene but a different protein 2) red, green, blue
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Unformatted text preview: 3) activation the same c) rods and cones use light sensitive pigments, these pigments break apart when they absorb light, which leads to action potential 1) rods pigment called rhodopsin (purple) (protein and retinene synthesized from vit. A. Deficiency leads to night blindness. 2) rhodopsin molecules break apart activate enzyme triggers series of reactions, reactions change permeability of rod cell membrane leads to n. impulse (ganglion cells)...
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Visual pathway - 3) activation the same c) rods and cones...

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