10/4/24, 8:33 AM
EUNICE
ABO Practical Exam WITH 100% SURE ANSWERS
Terms in this set (37)
BU/BU
Cancelling effect- subtract prism amounts BD/BD
BI/BO
Read in 1/8 diopters
.12
Powers between 0.00 & +/- 3.00 .37
.62
.87
Lensometer is also referred to as Lensmeter, focimeter, vertometer
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.
To focus eyepiece 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 Axis must be @ 180°, if not, transpose rx.
Prentice rule
P(prism)
P=hcmxd
Hcm(amount moved)
D(diopter)
BO/BO Compounds- add
BI/BI Compounds- add
BU/BD Compounds- add
BU/BU Cancels- subtract
BD/BD Cancels- subtract
BI/BO Cancels- subtract
1/3
EUNICE
ABO Practical Exam WITH 100% SURE ANSWERS
Terms in this set (37)
BU/BU
Cancelling effect- subtract prism amounts BD/BD
BI/BO
Read in 1/8 diopters
.12
Powers between 0.00 & +/- 3.00 .37
.62
.87
Lensometer is also referred to as Lensmeter, focimeter, vertometer
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.
To focus eyepiece 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 Axis must be @ 180°, if not, transpose rx.
Prentice rule
P(prism)
P=hcmxd
Hcm(amount moved)
D(diopter)
BO/BO Compounds- add
BI/BI Compounds- add
BU/BD Compounds- add
BU/BU Cancels- subtract
BD/BD Cancels- subtract
BI/BO Cancels- subtract
1/3
