ODP 2 FINAL PAPER QUESTIONS AND
CORRECT ANSWERS GRADED A+ STUDY
MATERIAL
●● 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
CORRECT ANSWERS GRADED A+ STUDY
MATERIAL
●● 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
