ODP: Spectacle Final Exam Questions With Revised Answers
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ODP
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ODP
ODP: Spectacle Final Exam Questions With
Revised Answers
Why would an optician split prism? - answerTo 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 relatio...
ODP: Spectacle Final Exam Questions With
Revised 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? - answer✔✔The
child will likely show signs of adapting to the prescription such as wanting to take them off in
the beginning.
How far will a 1 diopter prism displace an image? - answer✔✔1 cm
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