ODP: Spectacle Final Exam || All Correct 100%.
Why would an optician split prism? correct answers 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? correct answers +4.00 and +3.00
What is the relationship between diopter and focal length? correct answers When one increases,
the other decreases.
Donating to the Lion's Club is an example of: correct answers 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? correct answers 0.8 total BO
What is the power of a lens that has a focal length of 50 cm? correct answers 2.00 D
To test a lens using the drop ball test, what is commonly used? correct answers A 5/8-inch steel
ball
When is vertex distance compensation mandatory? correct answers 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? correct answers -3.00
What are the true powers of this prescription? -5.00 -0.50 x 90 correct answers -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? correct answers 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? correct answers 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? correct answers +6.00
*When measuring a frame to determine lens MBS, what is possible? correct answers ED could
be diagonal
How will moving a -5.00 diopter lens 10.00 mm closer to the eye affect the patient? correct
answers The lens will be 0.50 D too strong and the patient may experience undefined discomfort
, What is shrikage? correct answers 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? correct answers
HIPPA
This is the "B" measurement: correct answers Vertical measurement of box enclosing lens area
Which will have the most reflection, a lens with the index of? correct answers 1.71
What do the initials HEV stand for? correct answers High energy visable
What measurement is located at approximately 40 centimeters, or 16 to 18 inches? correct
answers Reading vision
What material has an index of 1.523? correct answers Crown glass
Give the simple definition of a bridge? correct answers Connects the two eye wires
Which refractive error results in part of the image in front of the retina and part behind the
retina? correct answers Mixed astigmatism
What should be part of the eyewear dispensing process? correct answers Inviting the patient back
for adjustments and repairs
DBL is mostly correctly defined as: correct answers Distance between lenses
What type of optical material will disperse light? correct answers All materials with non-parallel
sides
Define FVD: correct answers 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? correct answers 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? correct answers 1 cm
Calculate vertical decentation of a bifocal when the frame has a B measurement of 50mm and a
segment height of 28mm. correct answers 3 mm up
To what index is the lens clock calibrated? correct answers 1.530
What is true about a biconcave lens? correct answers It has a minus power base curve
Why would an optician split prism? correct answers 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? correct answers +4.00 and +3.00
What is the relationship between diopter and focal length? correct answers When one increases,
the other decreases.
Donating to the Lion's Club is an example of: correct answers 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? correct answers 0.8 total BO
What is the power of a lens that has a focal length of 50 cm? correct answers 2.00 D
To test a lens using the drop ball test, what is commonly used? correct answers A 5/8-inch steel
ball
When is vertex distance compensation mandatory? correct answers 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? correct answers -3.00
What are the true powers of this prescription? -5.00 -0.50 x 90 correct answers -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? correct answers 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? correct answers 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? correct answers +6.00
*When measuring a frame to determine lens MBS, what is possible? correct answers ED could
be diagonal
How will moving a -5.00 diopter lens 10.00 mm closer to the eye affect the patient? correct
answers The lens will be 0.50 D too strong and the patient may experience undefined discomfort
, What is shrikage? correct answers 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? correct answers
HIPPA
This is the "B" measurement: correct answers Vertical measurement of box enclosing lens area
Which will have the most reflection, a lens with the index of? correct answers 1.71
What do the initials HEV stand for? correct answers High energy visable
What measurement is located at approximately 40 centimeters, or 16 to 18 inches? correct
answers Reading vision
What material has an index of 1.523? correct answers Crown glass
Give the simple definition of a bridge? correct answers Connects the two eye wires
Which refractive error results in part of the image in front of the retina and part behind the
retina? correct answers Mixed astigmatism
What should be part of the eyewear dispensing process? correct answers Inviting the patient back
for adjustments and repairs
DBL is mostly correctly defined as: correct answers Distance between lenses
What type of optical material will disperse light? correct answers All materials with non-parallel
sides
Define FVD: correct answers 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? correct answers 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? correct answers 1 cm
Calculate vertical decentation of a bifocal when the frame has a B measurement of 50mm and a
segment height of 28mm. correct answers 3 mm up
To what index is the lens clock calibrated? correct answers 1.530
What is true about a biconcave lens? correct answers It has a minus power base curve
