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ABO Study guides, Class notes & Summaries
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ABO Certification (American Board of Opticianry) Exams PACKAGE DEAL | BUNDLE contains exams, practice tests, knowledge check and study guides | Latest 2023/2024 - Everything you need to pass ABO is here!
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ABO Certification (American Board of Opticianry) Exams PACKAGE DEAL | BUNDLE contains exams, practice tests, knowledge check and study guides | Latest 2023/2024 - Everything you need to pass ABO is here!
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Package deal for ABO ADVANCE STUDY GUIDE (QUESTIONS AND ANSWERS) 2024 UPDATED
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ABO ADVANCE STUDY GUIDE (QUESTIONS AND ANSWERS) 2024 UPDATED
ABO EXAM PREPARATION(QUESTIONS AND ANSWERS)
ABO PRACTICAL EXAM ADVANCED QUESTIONS AND ANSWERS
ABO PRACTICE TEST REVIEWED AND UPDATED QUESTIONS AND ANSWERS 2024
ABO STUDY GUIDE EXAM PRACTICE QUESTIONS AND ANSWERS LATEST UPDATED
ABO EXAM (QUESTIONS AND ANSWERS) 2024
ABO EXAM PRE-TEST EXAM S
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ABO Exam Bundle With Verified Solutions.
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ABO Exam Bundle With Verified Solutions.
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ABO Practice Test Exam Questions And Answers (Updated And Verified)
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ABO Practice Test Exam Questions And 
Answers (Updated And Verified) 
When discussing thick lenses, the factors which are considered in computing the lens power are: 
a. front curve, thickness and index 
b. back curve, thickness and index 
c. front curve, back curve and thickness 
d. front curve, back curve, thickness and index - answerd. front curve, back curve, thickness 
and index 
Toric transposition shows: 
a. lens thickness 
b. power in principal meridians 
c. the power of the ADD 
d. the ...
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ABO Exam Questions And Answers (Updated And Verified)
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ABO Exam Questions And Answers 
(Updated And Verified) 
When light is refraction by a prism it is: 
a. Bent toward the apex 
b, Bent toward the base 
c. Not bent 
d. Reflected - answerB. Bent toward the base 
A prism always bends light toward its base. 
Prisms: 
I. Always bend light toward the base 
II. Always bend light toward the apex 
III. Cause chromatic Dispersion 
IV. Move the image toward the apex 
V. Are sometimes prescribed for muscle problems - answerI. Always bend light toward base 
I...
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ABO PRACTICE EXAM PART ONE Questions With 100% Correct Answers
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ABO PRACTICE EXAM PART ONE 
Questions With 100% Correct Answers 
The wavelength of the infrared waves in the electromagnetic spectrum are - answerlonger 
than visible red light waves 
the Geneva Lens Measure is calibrated for a refractive index of - answer1.530 
A lens made from 2 convex surfaces - answerhas against motion 
A lens reads +4.25D in the vertometer. If the ocular curve is -4.00D, what is the front base 
curve? - answer+8.25D 
Which of these front base curves would be suitable for a ...
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ABO EXAM PRE-TEST Exam Questions And Answers (Updated And Verified)
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ABO EXAM PRE-TEST Exam Questions 
And Answers (Updated And Verified) 
150 mm - answerWhen ordering a six inch temple, its corresponding millimeter value is 
which of the following? 
A. 135 mm 
B. 140 mm 
C. 145 mm 
D. 150 mm 
500 mm - answerWhat is the focal length of a 2 diopter lens? 
A. 500 cm 
B. 39.37 inches 
C. 500 mm 
D. 2 meters 
Nanometers - answerWavelengths are measured in 
A. Meters 
B. Decimeters 
C. Centimeters 
D. Nanometers 
UVC - answerWhich of the following has the shortest and...
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ABO Practice Questions And Answers (Updated And Verified)
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ABO Practice Questions And Answers 
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How do you lower the front of the frame? - answerMove nose pads further apart or increase 
pantoscopic tilt (2 degrees = 1mm) 
If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is 
that? - answerPressure is being applied by the temple shafts anterior to the ear. 
When the wearers PD is less than the frame PD what should you do? - answerPositive face 
form 
The new bifocal wearer must: - an...
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ABO Practice Exam Questions And Answers (Updated And Verified)
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ABO Practice Exam Questions And Answers 
(Updated And Verified) 
If the wearer complains of the bifocal line being somewhat in his way when driving, the problem 
may be alleviated by decreasing the distance between pads. 
True or False - answerFalse 
If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is 
that: 
A. The frame is too small 
B. The bridge fit is tight 
C. Pressure is being applied by the temple shafts anterior to the ear. 
D. Pressure i...
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ABO Practical Exam Questions And Answers (Updated And Verified)
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ABO Practical Exam Questions And Answers 
(Updated And Verified) 
Single Vision - answercorrects for one distance 
Multifocal - answerCorrects with two or more prescriptions (or 'powers') 
Bifocal - answerlens having two focus strengths 
Trifocal - answerpertaining to having three focus strengths 
Calculating Prismatic Effects - answerobtained 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 
dur...
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ABO STUDY GUIDE 2024/2025
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ABO STUDY GUIDE 2024/2025 
Prentice Rule - ️️ - (Power x distance in mm) /10 
Cornea index of refraction - ️️ - 1.37 
Tear Film, Vitreous index of refraction - ️️ - 1.33 
Crystalline lens index of refraction - ️️ - 1.42 
Optical Standard index of refraction - ️️ - 1.53 
Crown Glass index of refraction - ️️ - 1.523 
High index of refraction - ️️ - 1.74 
CR-39 index of refraction - ️️ - 1.49/1.50 
Poly index of refraction - ️️ - 1.586 
Air - ️️ - 1.00 
How f...
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ABO REVIEW STUDY GUIDE WITH SOLUTIONS 2024
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ABO REVIEW STUDY GUIDE WITH SOLUTIONS 2024 
Sclera - ️️ - Tough, white outer coat of the eyeball 
myopia - ️️ - nearsightedness; the condition in which parallel rays of light are 
brought into focus in front of the retina, rather than on it 
reflection - ️️ - light that bounces back 
refraction - ️️ - when the direction of light changes as it passes from one medium to 
another(bending of light) 
presbyopia - ️️ - Age of 40 
need reading glass crystalline lens diminishes 
fram...
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