Abbe value - Study guides, Class notes & Summaries
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ABO STUDY|UPDATED&VERIFIED|GUARANTEED SUCCESS
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Abbe Value 
A numerical expression of how prone a lens material is to causing chromatic aberration. The higher the Abbe Value the lower the chance it will cause aberration 
 
 
 
Aberration 
An unclear image of an object when viewed through a lens. 
 
 
 
ABO 
American Board of Opticianary an agency that provides various levels certification for persons in the field. It is only a written exam not a practical. 
 
 
 
Accommodation 
The ability for the eye's crystalline lens to change shape and a...
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ABO Practice Test Questions and Answers Already Passed
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ABO Practice Test Questions and Answers Already Passed 
Corpuscular the theory which explains light as a stream of invisible bundles of energy 
Photons the visible bundles of energy 
Electromagnetic Theory The theory which explains light as moving in a series of wave pulsations. 
186,000 miles per second the speed of light in air 
ray a point of light pulsating in a straight line 
all colors the colors that visible or white light are composed of 
base 
a prism will bend light towards its 
one me...
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ABO study Exam Questions with 100% Verified Solutions
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Abbe Value - A numerical expression of how prone a lens material is to causing chromatic aberration. The higher the Abbe Value the lower the chance it will cause aberration 
 
Aberration - An unclear image of an object when viewed through a lens. 
 
ABO - American Board of Opticianary an agency that provides various levels certification for persons in the field. It is only a written exam not a practical. 
 
Accommodation - The ability for the eye's crystalline lens to change shape a...
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Abo study Test Summary
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Abo study 
 
Abbe Value - A numerical expression of how prone a lens material is to causing chromatic aberration. The higher the Abbe Value the lower the chance it will cause aberration 
 
Aberration - An unclear image of an object when viewed through a lens. 
 
ABO - American Board of Opticianary an agency that provides various levels certification for persons in the field. It is only a written exam not a practical. 
 
Accommodation - The ability for the eye's crystalline lens to change shape ...
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ABO advanced A+ Compiled Revision Questions and Certified Answers 2024
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Base Curve - Curvature of the front of the lens 
How is Cyl ground on a minus cyl lens? - Single curve on the front. Cyl ground on the 
back 
How is cyl ground on a plus cyl lens? - Flattest curve on the front. Old way of doing it do 
to cosmetics 
What is Vogels formula used for? - Creating best form and n standard surfacing 
Vogel's Formula (+ lenses) - Spherical equivalent + 6.00 
Vogel's Formula (- lenses) - Spherical equivalent + 6.00 / 2 
Corrected Curve Theory rules: - #1 ocular curve...
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Practice Questions for ABO Exam with Answers | Graded A+
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What controls the amt of light entering the eye - Iris 
 
Meniscus, equiconcave and flat concave are types of: - Minus lenses 
 
What is the term used to describe the eye's tendency to turn from its normal position? - Phoria 
 
What kind of lens has one convex and one concave surface? - Meniscus 
 
What material has the most favorable optical properties? - Crown glass 
 
What is the best lens treatment to reduce water and road surface glare? - Polarized 
 
The hard resin mater...
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ABO practice exam ophlthalmic optics, Exam Questions And Correct Answers.
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ABO practice exam ophlthalmic optics, Exam Questions And Correct Answers. 
 
. Columbia Resin-39. 
. Lenses that commonly referred to as plastic are made of a material called ___________ a. Zylonite. b. Columbia Resin-39. c. Hivex. d. Polycarbonate. 
Runs perpendicular to 
The "normal" is an imaginary line that ________________ the lens surface. a. Refracts through b. Runs parallel to c. Runs perpendicular to d. Reflects off of 
.Simple hyperopic astigmatism 
. +3.00 -3.00 x 180 is an indicati...
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Optician Exam Review Questions and Answers
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Optician Exam Review Questions and Answers 
If the center dot you have placed upon the uncut lens while spotting it does not lie directly upon the optical center of the lens: 
a) 
The lens is a progressive. 
b) 
The lens is a bifocal. 
c) 
There is prism in the lens. 
d) 
There is a lack of prism in the lens. 
e) 
You have spotted the lens wrong. 
c) 
There is prism in the lens. 
 
 
 
Which relationship would illustrate compound hyperopic astigmatism? 
a) 
- = + and + = - 
b) 
+ = - and + = + 
...
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Optician Training Mid Term Exam Latest
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Optician Training Mid Term 
 
Which one of these duties is not part of the optician's job - Diagnose and treat minor eye infections 
 
Which is not a core skill needed to be an optician? - Binocular vision 
 
Which of these items is not related to the NOCE certification exam? - Focuses on how to fit and assess contact lens issues 
 
How is the ABO-NCLE certification related to state optician licensing? - Some states still require both to work as an optician. 
 
What is a type of certification y...
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ABO Exam Practice Questions with correct Answers
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The part of the lensometer which is capable of measuring the amount of prism is the: 
 
A. reticle 
B. axis wheel 
C. spotting device 
D. power drum - Answer- A. reticle 
 
Which of the following is a lensometer not capable of measuring? 
 
A. sphere power 
B. cylinder power 
C. base curve 
D. position of optical center - Answer- C. base curve 
 
You have been asked to neutralize a lens. After placing it in the lensometer, you observe that the three closely space parallel lines come into shar...
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