Exam (elaborations)
OPTICIAN ABO LESSON 1-12
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OPTICIAN ABO LESSON 1-12
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Name: Score:152 Multiple choice questions
Term 1 of 152
1.498
refractive index of polycarbonate
refractive index of cr-39
bending of light rays
refractive index of cr-20
Term 2 of 152
Macular Degeneration
white part of the eye
fast rotation of the eye
thinning of the macula, deprived of oxygen
bending of light rays
Definition 3 of 152
what frame material has the best "shape memory" when heated
uvc
optyl
zylonite
propionate
,Term 4 of 152
1.66
refractive index of hi index 99.66
refractive index of polycarbonate
refractive index of hi index 1.66
area between cornea/ iris (pupil), refractive index of 1.33
Term 5 of 152
Keratoconus
point on a lens where light is undeviated
thinnest layer that helps aqueous layer to spread evenly over the eye
prevents light from focusing on retina, blurry vision starts in the peripheral
steepest curve on the back surface, located from 90 degrees from the prescribed axis
Term 6 of 152
ribbon seg
a round bifocal segment with the top and bottom cut off leaving a ribbon shaped segment
with a flat top and bottom
a glass blowers lens
A refraction index of 1.33, filled with vitreous humor (a gel), between crystalline lens and
retina
a lens that is crescent-shaped with one of the sides measuring a 6 diopter radius is known
as
,Term 7 of 152
epithelium
3rd layer, quick to regenerate, prevents bacteria from invasion
4th layer, quick to regenerate, prevents bacteria from invasion
2nd layer, quick to regenerate, prevents bacteria from invasion
1st layer, quick to regenerate, prevents bacteria from invasion
Definition 8 of 152
functions best in bright light, allows color
Rods
Iris
Cones
Cornea
Term 9 of 152
Globe
tolerance for vertical location of segments in mounted eyewear
76mm in diameters front to back, proper tern for eyeball
thinnest layer that helps aqueous layer to spread evenly over the eye
24mm in diameters front to back, proper tern for eyeball
, Definition 10 of 152
the wavelength of the infrared waves of the electromagnetic spectrum
absorption increases
less oblique astigmatism
longer than visible red waves
shorter than visible blue waves
Definition 11 of 152
which of the following factors is not needed when determining the amount of vertical imbalance
vertex power
add power
lens power
tear film
Definition 12 of 152
the longest wavelength of (660-760nm)
blue
violet
red
cones
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