WorksheetsOhlsen eyesight
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
adjustment of lens thickness to make close vision possible
a)
accommodation
b)
convexivity
c)
equilibrium
d)
nearsightedness
2.
convey color vision; sharp images; bright light vision; concentrated in center of retina
a)
cochlea
b)
cones
c)
rods
d)
stapes
3.
low light vision; black and white only; general outlines only; concentrated on periphery of retina
a)
cones
b)
cornea
c)
rods
d)
stapes
4.
area where fibers from medial portion of eyes cross to opposite side of brain; after optic nerve, before optic tracts
a)
optic chiasma
b)
optic disc
c)
optic radiations
d)
optic cortex
5.
axons from thalamus to optic cortex of occipital lobe
a)
optic chiasma
b)
optic disc
c)
optic radiation
d)
optic nerve
6.
fibers between optic chiasma and thalamus
a)
optic disc
b)
optic nerve
c)
optic radiation
d)
optic tracts
7.
bending of light
a)
diffusion
b)
differaction
c)
reflection
d)
refraction
8.
type of receptors found in the eye
a)
chemoreceptors
b)
mechanoreceptors
c)
photoreceptors
d)
thermoreceptors
9.
NOT one of the three color cone receptors
a)
chlorolabe- green
b)
cyanolabe- blue
c)
erythrolabe- red
d)
flavolabe- yellow
10.
lack of working rods; may be due to vitamin A deficiency
a)
color blindness
b)
day blindness
c)
night blindness
d)
total blindness
11.
complete lack of working cones
a)
green color blindness
b)
night blindness
c)
red-green color blindness
d)
total color blindness
12.
difficulty seeing shades of color, often red and green; X linked
a)
color blindness
b)
day blindness
c)
night blindness
d)
total color blindness
13.
perception of light when all cones stimulated at once
a)
black
b)
blue
c)
red
d)
white
14.
lobe of brain where visual cortex located
a)
frontal
b)
occipital
c)
parietal
d)
temporal
15.
pigment found in rod cells; broken down to opsin and retinal by photons
a)
chlorophyll
b)
melanin
c)
rhodopsin
d)
retinophyll
100 %
