ABO NCLE EXAM QUESTIONS AND ANSWERS (VERIFIED ANSWERS GRADED A+) LATEST UPDATE 2025/2026

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ABO NCLE EXAM QUESTIONS AND
ANSWERS (VERIFIED ANSWERS GRADED
A+) LATEST UPDATE 2025/2026
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 -
(ANSWER)Myopia



Difficulty accommodating* due to the crystalline lens becoming less elastic. -
(ANSWER)Presbyopia



Around what wavelenght of light is thought to cause cataracts - (ANSWER)460
nm



Axis pliers are meant to do what - (ANSWER)Turn and rotate a lens



Cr39 Index and abbe - (ANSWER)Index 1.49 Abbe 59



Crown glass index and abbe - (ANSWER)Index 1.523 Abbe 60



Trivex Index and abbe - (ANSWER)Index 1.54 Abbe 43-45



Polcarbanate index and abbe - (ANSWER)Index 1.58 Abbe 30

, 2


Hight index 1.60- 1.67 index and abbe - (ANSWER)1.6 abbe 36, 1.67 abbe 32



Ultra high index 1.70- 1.7.4 index and abbe - (ANSWER)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 - (ANSWER)ASTM



What indication on a frame or glass indicates a pair of saftey glasses -
(ANSWER)ANSI Z87.1



how thick does a lens from a pair of safety glasses have to be - (ANSWER)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 ? - (ANSWER)Within the recticle



What is a distometer used for? - (ANSWER)Measuring vertex distance between
the front of the eye and the back of the lens



What is a phoropter used for ? - (ANSWER)measures the eye's refractive error to
help determine and eye prescription



What is a poalriscope used for? - (ANSWER)it measures internal stress within lens