Lens calipers Study guides, Class notes & Summaries
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ABO REVIEW 2023 updated to pass
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ABO REVIEW 2023 updated to pass 
Sclera - correct answer Tough, white outer coat of the eyeball 
 
myopia - correct answer nearsightedness; the condition in which parallel rays of light are brought into focus in front of the retina, rather than on it 
 
reflection - correct answer light that bounces back 
 
refraction - correct answer when the direction of light changes as it passes from one medium to another(bending of light) 
 
presbyopia - correct answer Age of 40 
need reading glass crystall...
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ABO Practice Test 2023
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Corpuscular - Answer- the theory which explains light as a stream of invisible bundles of energy 
 
Photons - Answer- the visible bundles of energy 
 
Electromagnetic Theory - Answer- The theory which explains light as moving in a series of wave pulsations. 
 
186,000 miles per second - Answer- the speed of light in air 
 
ray - Answer- a point of light pulsating in a straight line 
 
all colors - Answer- the colors that visible or white light are composed of 
 
base - Answer- a prism will bend ...
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ABO Practical questions and answers 2023
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Single Vision - corrects for one distance 
 
Multifocal - Corrects with two or more prescriptions (or 'powers') 
 
Bifocal - lens having two focus strengths 
 
Trifocal - pertaining to having three focus strengths 
 
Calculating Prismatic Effects - 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 o...
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ABO Practical Exam Questions and Answers
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Single Vision - Answer- corrects for one distance 
 
Multifocal - Answer- Corrects with two or more prescriptions (or 'powers') 
 
Bifocal - Answer- lens having two focus strengths 
 
Trifocal - Answer- pertaining to having three focus strengths 
 
Calculating Prismatic Effects - 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 ...
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ABO Practical Exam Questions And Correct Answers, With Complete Verified Solution. Updated 2024
- Exam (elaborations) • 6 pages • 2024
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ABO Practical Exam Questions And Correct Answers, With Complete Verified Solution. Updated 2024 
 
Single Vision 
corrects for one distance 
Multifocal 
Corrects with two or more prescriptions (or 'powers') 
Bifocal 
lens having two focus strengths 
Trifocal 
pertaining to having three focus strengths 
Calculating Prismatic Effects 
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 ...
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ABO Practical Exam Latest
- Exam (elaborations) • 6 pages • 2023
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Available in package deal
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ABO Practical 
 
Single Vision - corrects for one distance 
 
Multifocal - Corrects with two or more prescriptions (or 'powers') 
 
Bifocal - lens having two focus strengths 
 
Trifocal - pertaining to having three focus strengths 
 
Calculating Prismatic Effects - 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...
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ABO Review Questions with 100% Correct Solutions | Graded A+
- Exam (elaborations) • 4 pages • 2023
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Available in package deal
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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 
 
frame difference - the difference betweeen the horizontal and verti...
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ABO Practice exam 2023 with 100% correct answers
- Exam (elaborations) • 3 pages • 2023
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How do you lower the front of the frame? 
Move 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? 
Pressure 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? 
Positive face form 
 
 
 
The new bifocal wearer must: 
Drop the eyes to read a book 
 
 
 
When the frame front is tested fo...
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ABO Practice Test Questions And Correct Answers, Complete Verified Solution. 2024
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ABO Practice Test Questions And Correct Answers, Complete Verified Solution. 2024 
 
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 ...
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ABO EXAM PRACTICE PART TWO QUESTIONS AND ANSWERS
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a pair of eye with a distance P.D. =68mm, converge for a reading an average of about - Answer- 3 to 4 mm 
 
if the pupillary distance is measured while the patient is focusing on a point 30 inches in front of the eyes, the P.D. measured is known as the - Answer- intermediate P.D. 
 
the instrument that opticians commonly use to measure the vertex distance is called a - Answer- distometer 
 
if the long edge of an adjustable nose pad digs into a persons nose, which angle should be altered? - Answ...
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