Ohlsen eyesight

adjustment of lens thickness to make close vision possible

• accommodation
• convexivity
• equilibrium
• nearsightedness

convey color vision; sharp images; bright light vision; concentrated in center of retina

• cochlea
• cones
• rods
• stapes

low light vision; black and white only; general outlines only; concentrated on periphery of retina

• cones
• cornea
• rods
• stapes

area where fibers from medial portion of eyes cross to opposite side of brain; after optic nerve, before optic tracts

• optic chiasma
• optic disc
• optic radiations
• optic cortex

axons from thalamus to optic cortex of occipital lobe

• optic chiasma
• optic disc
• optic radiation
• optic nerve

fibers between optic chiasma and thalamus

• optic disc
• optic nerve
• optic radiation
• optic tracts

bending of light

• diffusion
• differaction
• reflection
• refraction

type of receptors found in the eye

• chemoreceptors
• mechanoreceptors
• photoreceptors
• thermoreceptors

NOT one of the three color cone receptors

• chlorolabe- green
• cyanolabe- blue
• erythrolabe- red
• flavolabe- yellow

lack of working rods; may be due to vitamin A deficiency

• color blindness
• day blindness
• night blindness
• total blindness