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ABO Practical Exam QUESTIONS & ANSWERS 2023 ( A+ GRADED 100% VERIFIED)

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ABO Practical Exam QUESTIONS & ANSWERS 2023 ( A+ GRADED 100% VERIFIED)

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ABO Practical Exam
Cancelling effect- subtract prism amounts - ANS BU/BU
BD/BD
BI/BO

Powers between 0.00 & +/- 3.00 - ANS Read in 1/8 diopters
.12
.37
.62
.87

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

To focus eyepiece - ANS 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 - ANS Axis must be @ 180°, if not, transpose rx.

P=hcm - ANS Prentice rule
P(prism)
Hcm(amount moved)
D(diopter)

BO/BO - ANS Compounds- add

BI/BI - ANS Compounds- add

BU/BD - ANS Compounds- add

BU/BU - ANS Cancels- subtract

BD/BD - ANS Cancels- subtract

BI/BO - ANS Cancels- subtract

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