ABO Practical Exam QUESTIONS AND
ANSWERS LATEST UPDATED 2024.
Cancelling effect- subtract prism amounts - Correct answer BU/BU
BD/BD
BI/BO
Powers between 0.00 & +/- 3.00 - Correct answer Read in 1/8 diopters
.12
.37
.62
.87
Lensometer is also referred to as - Correct answer Lensmeter, focimeter,
vertometer
To focus eyepiece - Correct 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 - Correct answer Axis must be @ 180°, if not,
transpose rx.
P=hcmxd - Correct answer Prentice rule
P(prism)
Hcm(amount moved)
D(diopter)
BO/BO - Correct answer Compounds- add
BI/BI - Correct answer Compounds- add
BU/BD - Correct answer Compounds- add
BU/BU - Correct answer Cancels- subtract
BD/BD - Correct answer Cancels- subtract
