Ophthalmic Career Progression Program Volume III Questions and Answers
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Ophthalmic Career Progression Program Volume III
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Ophthalmic Career Progression Program Volume III
Ophthalmic Career Progression Program Volume III Questions and Answers Ophthalmic Career Progression Program Volume III Questions and Answers Ophthalmic Career Progression Program Volume III Questions and Answers
A lens dispersing white light into its component colors is an example of which abe...
Ophthalmic Career Progression Program
Volume III Questions and Answers
A lens dispersing white light into its component colors is an example of which
aberration? - ANSWER-Chromatic Aberration
Which aberrations are of the greatest concern to a spectacle wearer? - ANSWER-
Marginal (oblique) astigmatism and curvature of field.
The lens aberration that produces a shorter focal length for rays near the edge of the
lens than rays near the optical axis is called what? - ANSWER-Spherical aberration
Designers of corrected curve lenses give much consideration to this aberration. -
ANSWER-Marginal (oblique) astigmatism
The aberration affecting image shape when wearing high plus lenses is called what? -
ANSWER-Pincushion distortion
The aberration affecting image shape when wearing high minus lenses is called what? -
ANSWER-Barrel distortion
What aberration is induced with pantoscopic tilt? - ANSWER-Marginal (oblique)
astigmatism
The aberration that depends on the material the lens is made from is called what? -
ANSWER-Chromatic aberration
The larger the frame difference, the ... the lens shape: - ANSWER-Narrower
If the lenses are decentered in a frame by 4mm, this will also change the location of the
geometrical center distance. - ANSWER-False
The aberrations which are "narrow beam" aberrations include what? - ANSWER-
Marginal (oblique) astigmatism and curvature of field
The aberration that can induce cylinder power in a spherical lens is called what? -
ANSWER-Marginal (oblique) astigmatism
If the eyelashes rub the lenses, the fitter should...? - ANSWER-Increase the vertex
distance
, If the wearer complains that the glasses feel snug but still slip down the nose, one likely
cause is that...? - ANSWER-Pressure is being applied by the temple shafts anterior to
the ear
A wearer complains that the lenses are unequally distant from the eyes. To correct this,
one could - ANSWER-Increase the temple spread on the side farthest from the face
Before ordering prescription eyeglasses or even performing a visual examination what
must be determined? - ANSWER-The patient's PD
When the frame front is tested for four-point touch but only touches on the two temporal
eyewires, the frame - ANSWER-has face form
When using a pupilometer, the hairline is adjusted to which point? - ANSWER-The
center of the corneal reflex
The limbal edge may be used as a reference point in taking monocular PDs - ANSWER-
False
What is the maximum near working distance that should be measured when the add
prescribed is +1.50? What would normally be chosen? - ANSWER-66 cm 40 cm
Bowing the temples is an expression referring to - ANSWER-curving the temples
around the head
If the eyewire touch the eyebrows, the adjustment to take care of this condition would
be - ANSWER-all of the above
When adjusting the frame, the bifocal height can be lowered by using the following
adjustment - ANSWER-using more pantoscopic tilt
To relieve the pressure causing soreness at the front edge of the nose pads, a good
adjustment would be - ANSWER-decrease the flare of the pads
If the pads are bent down and the pads are realigned, this adjustment will - ANSWER-
raise the front
If the left temple is angled down, this adjustment will - ANSWER-raise the left side of the
front
If the pad arms are shortened, this adjustment will - ANSWER-bring the front closer in
If the pads are brought closer together this adjustment will - ANSWER-raise the front
If the left temple is angled out, this adjustment will - ANSWER-bring left side of front
toward the left eye
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