ABO Practical broken down based on the ABO-
NCLE practical Exam Candidate HandbookPractical
Test Specifications sheet QUESTIONS WITH
CORRECT ANSWERS.
A measurement - CORRECT ANSWER✅✅horizontal frame depth
ANSI - CORRECT ANSWER✅✅American National Standards Institute: A private, non-
profit organization that coordinates the development and use of voluntary consensus
standards in the United States.
ASTM - CORRECT ANSWER✅✅American Society for Testing and Materials
B measurement - CORRECT ANSWER✅✅vertical frame depth
B& L style adjusting pliers - CORRECT ANSWER✅✅flat arm will work with pads
whose mountings are flush against the pad
Bifocal - CORRECT ANSWER✅✅lens having two focus strengths
Big Brass screwdriver - CORRECT ANSWER✅✅unscrew most screw, with a large
brass handle
Bridge pressure - CORRECT ANSWER✅✅90% of eyeglass weight
too small bridge will cause irritation on the sides of the nose
to large a bridge will put unnecessary pressure on the crest of the patients nose
C- size - CORRECT ANSWER✅✅The circumference of the lens
Calculating Prismatic Effects - CORRECT ANSWER✅✅obtained at the center of an
optical lens by producing a difference in edge thickness, either by grinding the back
surface at an angle to the front surface during lens surfacing or, if the lens has sufficient
power, de-centering the optical center of the lens
Cancelling Prism - CORRECT ANSWER✅✅BI & BO
BD & BD
BU & BU
, chappel cutting pliers - CORRECT ANSWER✅✅he Chappel Cutting Plier cuts screw
assemblies and reduces the risk of damaging lenses
Circumference gauge - CORRECT ANSWER✅✅For quick and accurate
measurements of lenses or patterns.
Compounding Prism - CORRECT ANSWER✅✅BI & BI
BO & BO
BU & BD
Corneal reflex Pupilometer - CORRECT ANSWER✅✅for precisely measuring and
digitally recording pupillary distances. Used for measuring of monocular and binocular
Datum Line - CORRECT ANSWER✅✅180 line, reference point for measurements
DBC - CORRECT ANSWER✅✅distance between centers, also referred to as the
frame PD or FPD
DBL - CORRECT ANSWER✅✅distance between lenses, smallest linear measurement
between lenses
Digital Measurement System - CORRECT ANSWER✅✅takes measurements digitally
for pd, seg height, and oc
Distometer - CORRECT ANSWER✅✅An instrument for measuring vertex distance.
ear pressure - CORRECT ANSWER✅✅90% of adjustment to make it feel comfortable
ED - CORRECT ANSWER✅✅effective diameter, twice the longest radius of the lens
EPA - CORRECT ANSWER✅✅Environmental protection agency, an independent
federal agency established to coordinate programs aimed at reducing pollution and
protecting the environment
European pad adjusting pliers - CORRECT ANSWER✅✅designed specifically for
screw and snap in type nosepad adjustment. box shaped indentation fits around the
nosepad box. opposite jaw is curved to mimic the shape of the pad itself. curved arm is
padded tp protect the pads when working with soft silicone pads
eyewire sizing pliers - CORRECT ANSWER✅✅used to check the size of the lens
without damaging the barrels of the frame
NCLE practical Exam Candidate HandbookPractical
Test Specifications sheet QUESTIONS WITH
CORRECT ANSWERS.
A measurement - CORRECT ANSWER✅✅horizontal frame depth
ANSI - CORRECT ANSWER✅✅American National Standards Institute: A private, non-
profit organization that coordinates the development and use of voluntary consensus
standards in the United States.
ASTM - CORRECT ANSWER✅✅American Society for Testing and Materials
B measurement - CORRECT ANSWER✅✅vertical frame depth
B& L style adjusting pliers - CORRECT ANSWER✅✅flat arm will work with pads
whose mountings are flush against the pad
Bifocal - CORRECT ANSWER✅✅lens having two focus strengths
Big Brass screwdriver - CORRECT ANSWER✅✅unscrew most screw, with a large
brass handle
Bridge pressure - CORRECT ANSWER✅✅90% of eyeglass weight
too small bridge will cause irritation on the sides of the nose
to large a bridge will put unnecessary pressure on the crest of the patients nose
C- size - CORRECT ANSWER✅✅The circumference of the lens
Calculating Prismatic Effects - CORRECT ANSWER✅✅obtained at the center of an
optical lens by producing a difference in edge thickness, either by grinding the back
surface at an angle to the front surface during lens surfacing or, if the lens has sufficient
power, de-centering the optical center of the lens
Cancelling Prism - CORRECT ANSWER✅✅BI & BO
BD & BD
BU & BU
, chappel cutting pliers - CORRECT ANSWER✅✅he Chappel Cutting Plier cuts screw
assemblies and reduces the risk of damaging lenses
Circumference gauge - CORRECT ANSWER✅✅For quick and accurate
measurements of lenses or patterns.
Compounding Prism - CORRECT ANSWER✅✅BI & BI
BO & BO
BU & BD
Corneal reflex Pupilometer - CORRECT ANSWER✅✅for precisely measuring and
digitally recording pupillary distances. Used for measuring of monocular and binocular
Datum Line - CORRECT ANSWER✅✅180 line, reference point for measurements
DBC - CORRECT ANSWER✅✅distance between centers, also referred to as the
frame PD or FPD
DBL - CORRECT ANSWER✅✅distance between lenses, smallest linear measurement
between lenses
Digital Measurement System - CORRECT ANSWER✅✅takes measurements digitally
for pd, seg height, and oc
Distometer - CORRECT ANSWER✅✅An instrument for measuring vertex distance.
ear pressure - CORRECT ANSWER✅✅90% of adjustment to make it feel comfortable
ED - CORRECT ANSWER✅✅effective diameter, twice the longest radius of the lens
EPA - CORRECT ANSWER✅✅Environmental protection agency, an independent
federal agency established to coordinate programs aimed at reducing pollution and
protecting the environment
European pad adjusting pliers - CORRECT ANSWER✅✅designed specifically for
screw and snap in type nosepad adjustment. box shaped indentation fits around the
nosepad box. opposite jaw is curved to mimic the shape of the pad itself. curved arm is
padded tp protect the pads when working with soft silicone pads
eyewire sizing pliers - CORRECT ANSWER✅✅used to check the size of the lens
without damaging the barrels of the frame
