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ABO NCLE Exam Questions and Correct Answers
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when light is broken down into basic colors causing a rainbow effect ~~~ Dispersion Abbe values range between what numbers? ~~~ 29-60 What three things happen when lights hit a medium ~~~ Refraction, Absorption, and Reflection Any defect in the optical system ~~~ Aberration What is the ...

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  • August 15, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • abo ncle exam questions and correct answers

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ABO NCLE Exam Questions and Correct
Answers
A condition of the eye in which light focuses in front of the retina. Caused by either

the eye being too strong or the globe of the eye being too long

✓ ~~~ Myopia




Difficulty accommodating* due to the crystalline lens becoming less elastic.

✓ ~~~ Presbyopia



Around what wavelenght of light is thought to cause cataracts

✓ ~~~ 460 nm




Axis pliers are meant to do what

✓ ~~~ Turn and rotate a lens



Cr39 Index and abbe

✓ ~~~ Index 1.49 Abbe 59




Crown glass index and abbe

✓ ~~~ Index 1.523 Abbe 60




Trivex Index and abbe

, ✓ ~~~ Index 1.54 Abbe 43-45




Polcarbanate index and abbe

✓ ~~~ Index 1.58 Abbe 30




Hight index 1.60- 1.67 index and abbe

✓ ~~~ 1.6 abbe 36, 1.67 abbe 32



Ultra high index 1.70- 1.7.4 index and abbe

✓ ~~~ 1.7 abbe 36, 1.74 abbe 33



If somone chose a pair of lenses to put in a frame for primary sports use what

orginazation would have checked the safety of the lenses

✓ ~~~ ASTM



What indication on a frame or glass indicates a pair of saftey glasses

✓ ~~~ ANSI Z87.1




how thick does a lens from a pair of safety glasses have to be

✓ ~~~ 3 mm thick or on a perscription higher than +3 at its thinest part needs to be 2
mm



Where is the concentric circles in a lensometer ?

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