My ABO flashcards practice
Comprehensive Questions (Frequently
Tested) with Verified Answers Graded A+
Ocular image cross - Answer: At the optical chiasm
A person who requires no prescription to see at a distance is called - Answer: emmetropic
The spherical equivalent of the lens +2.00+2.50x090 is - Answer: +4.50
Your lensometer reads -0.25 with no lens, a lens that measures -3.00-1.50x180 is actually -
Answer: -3.25-1.50x180
A reverse slab off is molded with Base ______ prism in the near portion of the lens. - Answer:
Down
What is the best frame adjustment when the left lens sits closer to the patient's face than the
right lens? - Answer: angle left temple in
A plus 0.5 diopter lens decentered 2.0mm creates - Answer: 0.10^
Which wavelengths of light have been indicated as possible contributor to the onset of cataracts
- Answer: 350nm-400nm
When the optician advises the patient/customer as to the safety of the lens material, it should
be described in terms of - Answer: impact resistance
, A spectrometer measures the - Answer: light transmission
The instrument that opticians commonly use to measure base curves is called a/an - Answer:
geneva lens measure (lens clock)
The type of bridge on a frame rests entirely on the nose - Answer: unifit
A focimeter cannot measure or locate - Answer: vertex distance
What is the best frame adjustment when the left lens sits closer to the patient's face than the
right lens? - Answer: angle right temple in
Given the prescription +1.00+1.00x090, how much of the +1.00 cylinder is in effect at axis 090? -
Answer: 0%
A spherical plus lens moved such a way that the patient is looking through the lens above the
optical center results in which type of prismatic effect? - Answer: base down
When viewing the wearer from the front, it is discovered that the frame sits too far to the left
(wearer's right) on the wearer's face. This could be caused by - Answer: both pads shifted to the
wearer's left
Which of the following is not Ametropia? - Answer: strabismus
The cylinder axis tolerance for a 1.25 cylinder is - Answer: 3 degrees
A -3.00 lens has the following prismatic effect 8mm below the optical center - Answer: 2.4 ^ BU
Comprehensive Questions (Frequently
Tested) with Verified Answers Graded A+
Ocular image cross - Answer: At the optical chiasm
A person who requires no prescription to see at a distance is called - Answer: emmetropic
The spherical equivalent of the lens +2.00+2.50x090 is - Answer: +4.50
Your lensometer reads -0.25 with no lens, a lens that measures -3.00-1.50x180 is actually -
Answer: -3.25-1.50x180
A reverse slab off is molded with Base ______ prism in the near portion of the lens. - Answer:
Down
What is the best frame adjustment when the left lens sits closer to the patient's face than the
right lens? - Answer: angle left temple in
A plus 0.5 diopter lens decentered 2.0mm creates - Answer: 0.10^
Which wavelengths of light have been indicated as possible contributor to the onset of cataracts
- Answer: 350nm-400nm
When the optician advises the patient/customer as to the safety of the lens material, it should
be described in terms of - Answer: impact resistance
, A spectrometer measures the - Answer: light transmission
The instrument that opticians commonly use to measure base curves is called a/an - Answer:
geneva lens measure (lens clock)
The type of bridge on a frame rests entirely on the nose - Answer: unifit
A focimeter cannot measure or locate - Answer: vertex distance
What is the best frame adjustment when the left lens sits closer to the patient's face than the
right lens? - Answer: angle right temple in
Given the prescription +1.00+1.00x090, how much of the +1.00 cylinder is in effect at axis 090? -
Answer: 0%
A spherical plus lens moved such a way that the patient is looking through the lens above the
optical center results in which type of prismatic effect? - Answer: base down
When viewing the wearer from the front, it is discovered that the frame sits too far to the left
(wearer's right) on the wearer's face. This could be caused by - Answer: both pads shifted to the
wearer's left
Which of the following is not Ametropia? - Answer: strabismus
The cylinder axis tolerance for a 1.25 cylinder is - Answer: 3 degrees
A -3.00 lens has the following prismatic effect 8mm below the optical center - Answer: 2.4 ^ BU
