quiz 2 on the eye
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| macule lutera | yellow disk
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| fovea centralis | is inside the macula lutera and is an area packed with cones
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| color vision | due to 3 types of cones/ red,green,blue
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| rods | rods contain a photo sensative chemical called rhodopsin(visual purple). DIM LIGHT= moe sensative
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| R,G + B CONES | the ratio of red green and blue cones stimulated determines the color that you see
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| brightness of color | brighness of a coloris determined by the #number of impulses a sec. sent to the brain
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| visual colors | red,orange,yellow,green,blue,indigo,violet > ultra violet
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| color blind | you lack red,green,blue cones, it's genetic and is a sex linked diease on X chromosomes
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| trichromat | you can see all colors
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| dichromat | 1 missing type of cones
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| monochromat | no cones
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| dark adaptation | this is when going from BRIGHT LIGHT to DIM LIGHT. this is when you break down all the chemicals in the rods+cons. you need time in the dark to rebuild chemicals
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| light adaptation | excess chemicals break down. going from DIM LIGHT to BRIGHT LIGHT
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| purkinje shift | shift from rods + cons(dawn)/ cons to rods(night)
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| inverted retina | when the path of the impulse is opposite of the path of the light.
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| optical illusion | error in visual judgement
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| visual pathway | vision crosses over. some of the left eye can see the right field. some of the right can see stuff in the left field.
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| lateral geniculate body | turns image right side up
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| visual acuity | sharpness of vision 20/20 means your average
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| after image | image seen after initial stimulas is over. positive-same coloras original. negative- is opposite.
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| nyctalopia | night blindness
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| diplopia | double vision
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| amblyopia | lazy eye weak extrensic muscle in one eye
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| glaucoma | to much aqueous fluid
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| cataracts | cloudy area forms on the cornea or lens
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| diabetic retinaopathy | bleeding into vitreous fluid
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| macula degeneration | macula lutera(yellow disk) breaks down to much pressure
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| nystigma | uncontrolled eye movement
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| sty | inflammation of the oil gland
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| astigmatism | irregular cornea lens
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| floaters | see spots epethelial cells floatindg in the vtreous fluid
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Created by:
ktheobald11
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