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ABO Practice Test(Questions and Answers 100% correct)
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ABO Practice Test(Questions and Answers 100% correct)
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By: Marlabrown33 • 3 months ago
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ABO Practice Test(Questions and Answers 100%correct)
Terms in this set (404)
When discussing thick d. front curve, back curve, thickness and index
lenses, the factors which
are considered in
computing the lens power
are:
a. front curve, thickness
and index
b. back curve, thickness
and index
c. front curve, back curve
and thickness
d. front curve, back curve,
thickness and index
Toric transposition shows: b. power in principal meridians
a. lens thickness
b. power in principal
meridians
c. the power of the ADD
d. the lens diameter
,Increasing the diameter of c. weight
a minus power lens always
increases its:
a. vertex power
b. center thickness
c. weight
d. refractive index
The optical center of a b. in the geometric center of the segment
round segment is located:
a. at the very top of the
segment
b. in the geometric center
of the segment
c. 5 mm from the top of
the segment
d. at the very bottom of
the segment
The base curve of any c. segment
multifocal lens is found on
the surface containing the:
a. cross curve
b. cylinder surface
c. segment
d. ocular curve
,Normal slab-off (bicentric c. least plus power
grind) is ground on the
lens whose vertical
meridian has the:
a. strongest curves
b. most plus power
c. least plus power
d. least minus power
The refractive error d. mixed astigmatism
indicated by the Rx +1.75
-2.75 x 090 is:
a. compound hyperopic
astigmatism
b. compound myopic
astigmatism
c. simple myopic
astigmatism
d. mixed astigmatism
Tempering a lens by heat b. more resistant to impact
treating results in a lens
being:
a. less resistant to impact
b. more resistant to impact
c. more resistant to
surface scratching
d. impossible to break
, A slab-off lens is for the c. excessive prism imbalance at the reading level
correction of:
a. astigmatic errors
b. excessive weight of lens
c. excessive prism
imbalance at the reading
level
d. exotropia
Chem-tempering makes a a. ion exchange
glass lens more impact
resistant by placing the
lens in a potassium nitrate
bath. The lens undergoes
a process known as:
a. ion exchange
b. iron oxide activation
c. silver halide transfer
d. thermal bleaching
Which wavelengths of c. 350-400 nm
light have been indicated
as possible contributors to
the onset of cataracts?
a. 400-520 nm
b. 520-635 nm
c. 350-400 nm
d. 635-750 nm
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