ABO PRACTICAL CERTIFICATION REVIEW Questions with
Correct Answers (Grade A+)
Question 1: Powers between 0.00 & +/- 3.00.
Answer: Read in 1/8 diopters.12.37.62.87
Question 2: Lensometer is also referred to as.
Answer: Lensmeter, focimeter, vertometer
Question 3: To focus eyepiece.
Answer: 1) while turned off. Place white sheet of paper against lens stop. 2) turn focus ring all the way
counter clockwise,and then back clockwise until sharp. 3) remove paper and turn lensometer on 4) move
power drum to high plus, then turn away from you until sharp- should land at 0.00.
Question 4: To read HORIZONTAL prism.
Answer: Axis must be @ 180°, if not, transpose rx.
Question 5: P=hcmxd.
Answer:
1. Prentice rule
2. P(prism)
3. Hcm(amount moved)
4. D(diopter)
Question 6: BO/BO.
Answer: Compounds- add
Question 7: BI/BI.
Answer: Compounds- add
Question 8: BU/BD.
Answer: Compounds- add
Question 9: BU/BU.
Answer: Cancels- subtract
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Correct Answers (Grade A+)
Question 1: Powers between 0.00 & +/- 3.00.
Answer: Read in 1/8 diopters.12.37.62.87
Question 2: Lensometer is also referred to as.
Answer: Lensmeter, focimeter, vertometer
Question 3: To focus eyepiece.
Answer: 1) while turned off. Place white sheet of paper against lens stop. 2) turn focus ring all the way
counter clockwise,and then back clockwise until sharp. 3) remove paper and turn lensometer on 4) move
power drum to high plus, then turn away from you until sharp- should land at 0.00.
Question 4: To read HORIZONTAL prism.
Answer: Axis must be @ 180°, if not, transpose rx.
Question 5: P=hcmxd.
Answer:
1. Prentice rule
2. P(prism)
3. Hcm(amount moved)
4. D(diopter)
Question 6: BO/BO.
Answer: Compounds- add
Question 7: BI/BI.
Answer: Compounds- add
Question 8: BU/BD.
Answer: Compounds- add
Question 9: BU/BU.
Answer: Cancels- subtract
Page 1