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Exam (elaborations)

ABO Practical Exam with complete solutions

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ABO Practical Exam with complete solutions Cancelling effect- subtract prism amounts - ANSWER-BU/BU BD/BD BI/BO Powers between 0.00 & +/- 3.00 - ANSWER-Read in 1/8 diopters .12 .37 .62 .87 Lensometer is also referred to as - ANSWER-Lensmeter, focimeter, vertometer To focus eyepi...

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  • June 6, 2023
  • 4
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers
  • ABO
  • ABO
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ABO Practical Exam with complete solutions
Cancelling effect- subtract prism amounts - ANSWER-BU/BU

BD/BD

BI/BO



Powers between 0.00 & +/- 3.00 - ANSWER-Read in 1/8 diopters

.12

.37

.62

.87



Lensometer is also referred to as - ANSWER-Lensmeter, focimeter, vertometer



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.



To read HORIZONTAL prism - ANSWER-Axis must be @ 180°, if not, transpose rx.



P=hcmxd - ANSWER-Prentice rule

P(prism)

Hcm(amount moved)

D(diopter)



BO/BO - ANSWER-Compounds- add

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