ABO NCLE EXAM QUESTIONS AND
ANSWERS. VERIFIED 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 - ANS Myopia
Difficulty accommodating* due to the crystalline lens becoming less elastic. - ANS Presbyopia
Around what wavelenght of light is thought to cause cataracts - ANS 460 nm
Axis pliers are meant to do what - ANS Turn and rotate a lens
Cr39 Index and abbe - ANS Index 1.49 Abbe 59
Crown glass index and abbe - ANS Index 1.523 Abbe 60
Trivex Index and abbe - ANS Index 1.54 Abbe 43-45
Polycarbanate index and abbe - ANS Index 1.58 Abbe 30
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Hight index 1.60- 1.67 index and abbe - ANS 1.6 abbe 36, 1.67 abbe 32
Ultra high index 1.70- 1.7.4 index and abbe - ANS 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 - ANS ASTM
What indication on a frame or glass indicates a pair of saftey glasses - ANS ANSI Z87.1
how thick does a lens from a pair of safety glasses have to be - ANS 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 ? - ANS Within the recticle
What is a distometer used for? - ANS Measuring vertex distance between the front of the eye
and the back of the lens
What is a phoropter used for ? - ANS measures the eye's refractive error to help determine
and eye prescription
What is a poalriscope used for? - ANS it measures internal stress within lens
A condition of the eye in which light rays are focused behind the retina Caused by the eye being
too weak or the globe of the eye being too short - ANS Hyperopia
A condition where the eyes have unequal refractive power, greater than 1 diopter. -
ANS Anisometropia
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS. VERIFIED 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 - ANS Myopia
Difficulty accommodating* due to the crystalline lens becoming less elastic. - ANS Presbyopia
Around what wavelenght of light is thought to cause cataracts - ANS 460 nm
Axis pliers are meant to do what - ANS Turn and rotate a lens
Cr39 Index and abbe - ANS Index 1.49 Abbe 59
Crown glass index and abbe - ANS Index 1.523 Abbe 60
Trivex Index and abbe - ANS Index 1.54 Abbe 43-45
Polycarbanate index and abbe - ANS Index 1.58 Abbe 30
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Hight index 1.60- 1.67 index and abbe - ANS 1.6 abbe 36, 1.67 abbe 32
Ultra high index 1.70- 1.7.4 index and abbe - ANS 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 - ANS ASTM
What indication on a frame or glass indicates a pair of saftey glasses - ANS ANSI Z87.1
how thick does a lens from a pair of safety glasses have to be - ANS 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 ? - ANS Within the recticle
What is a distometer used for? - ANS Measuring vertex distance between the front of the eye
and the back of the lens
What is a phoropter used for ? - ANS measures the eye's refractive error to help determine
and eye prescription
What is a poalriscope used for? - ANS it measures internal stress within lens
A condition of the eye in which light rays are focused behind the retina Caused by the eye being
too weak or the globe of the eye being too short - ANS Hyperopia
A condition where the eyes have unequal refractive power, greater than 1 diopter. -
ANS Anisometropia
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
