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ODP Spectacle Final Exam Questions and Answers
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ODP Spectacle Final Exam Questions and Answers
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ODP: Spectacle Final Exam Questionsand Answers
Why would an optician split prism? - Answer -To achieve a more balanced appearance.
The front curve of a lens is +7.00, the back curves of this lens are -3.00 and -4.00. What
are the true powers? - Answer -+4.00 and +3.00
What is the relationship between diopter and focal length? - Answer -When one
increases, the other decreases.
Donating to the Lion's Club is an example of: - Answer -Waste management
A patient's PD was mistakenly noted to be 62 mm when the actual measurement is 66
mm. If the power of the lenses are -2.00 diopters in each eye, how much prism will be
induced in the finished spectacles and in which direction is the base? - Answer -0.8 total
BO
What is the power of a lens that has a focal length of 50 cm? - Answer -2.00 D
To test a lens using the drop ball test, what is commonly used? - Answer -A 5/8-inch
steel ball
When is vertex distance compensation mandatory? - Answer -For a spectacle lens Rx
over +/-7.00 diopters
A lens has a base curve that has a focal length of 40 inches, and an ocular curve with a
focal length of 10 inches. What is the diopter power of this lens? - Answer --3.00
What are the true powers of this prescription? -5.00 -0.50 x 90 - Answer --5.00 @ 090
and -5.50 @ 180
An elderly lady can no longer read her favorite mystery novels with ease. What is an
added value step to take for this patient? - Answer -Demonstrate a floor stand type of
magnifier that will allow enlarged viewing while making it easy to turn the pages.
What will surround and hold lenses in place? - Answer -The eyewire
, Using the Rule of Thumb corrected base curve theory, what would be the base curve for
a +2.00 -1.00 x 180 lens? - Answer -+6.00
*When measuring a frame to determine lens MBS, what is possible? - Answer -ED
could be diagonal
How will moving a -5.00 diopter lens 10.00 mm closer to the eye affect the patient? -
Answer -The lens will be 0.50 D too strong and the patient may experience undefined
discomfort
What is shrikage? - Answer -Inventory that is not accounted for physically, but shows up
in the inventory report
What entity regulates the use and disclosure of private health information? - Answer -
HIPPA
This is the "B" measurement: - Answer -Vertical measurement of box enclosing lens
area
Which will have the most reflection, a lens with the index of? - Answer -1.71
What do the initials HEV stand for? - Answer -High energy visable
What measurement is located at approximately 40 centimeters, or 16 to 18 inches? -
Answer -Reading vision
What material has an index of 1.523? - Answer -Crown glass
Give the simple definition of a bridge? - Answer -Connects the two eye wires
Which refractive error results in part of the image in front of the retina and part behind
the retina? - Answer -Mixed astigmatism
What should be part of the eyewear dispensing process? - Answer -Inviting the patient
back for adjustments and repairs
DBL is mostly correctly defined as: - Answer -Distance between lenses
What type of optical material will disperse light? - Answer -All materials with non-parallel
sides
Define FVD: - Answer -Fitted vertex distance
A 5 year old child has been prescribed his first eyeglasses prescription. The prescription
is +5.00 OU. What is one piece of advice the optician can give to the child's parents? -
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