day11 - Psychology 205 Perception 30 Sept 10 Day 11 1st...

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Psychology 205 Perception 30 Sept 10 Day 11 1st Prelim: 5 Oct, in class Review session: 4 Oct, 6-8 PM, Uris 202
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Light and the Eye evolution of eyes structure of the human eye uncorrected and corrected vision emmetropia myopia hyperopia near and far points the costs of literacy
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Evolutionary changes in the eye Rule: All intermediate states must be useful function 1. spots detect presence of light, circadian rhythms 2. chambers  + directionality    [Euglena]         {but Copelia} 3a. pinhole  + acuity                 [Nautilus]       chambers  3b. compound      + wide field of view  [Insects] 4. dioptric + low-level vision    (in murkiness, dusk,     moonlight, dawn)   [Octopus] 5. dioptric, [Humans] 
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2
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2a.  Copelia
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nautilus 3a
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fly,    compound  eye, and  ommatidia 3b
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size of eye  needed to  match human  resolution
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no corneal bulge,  no inverted retina 4 not a mobile eye
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5
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eye structures     function               anomalies cornea refract light astigmatism humors keep eye inflated,   floaters     minor cleanup ciliary bodies drain humors glaucoma choroid feed receptors blood  tapetum in nocturnal
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day11 - Psychology 205 Perception 30 Sept 10 Day 11 1st...

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