ABO NCLE CERTIFICATION TEST PAPER Questions with
Correct Answers (Grade A+)
Question 1: Difficulty accommodating* due to the crystalline lens becoming less elastic.
Answer: Presbyopia
Question 2: Around what wavelenght of light is thought to cause cataracts.
Answer: 460 nm
Question 3: Axis pliers are meant to do what.
Answer: Turn and rotate a lens
Question 4: Cr39 Index and abbe.
Answer: Index 1.49 Abbe 59
Question 5: Crown glass index and abbe.
Answer: Index 1.523 Abbe 60
Question 6: Trivex Index and abbe.
Answer: Index 1.54 Abbe 43-45
Question 7: Polycarbanate index and abbe.
Answer: Index 1.58 Abbe 30
Question 8: Hight index 1.60- 1.67 index and abbe.
Answer: 1.6 abbe 36, 1.67 abbe 32
Question 9: Ultra high index 1.70- 1.7.4 index and abbe.
Answer:
1. 7 abbe 36,
2. 74 abbe 33
Question 10: 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
Page 1
, Question 11: What indication on a frame or glass indicates a pair of saftey glasses.
Answer: ANSI Z87.1
Question 12: 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
Question 13: Where is the concentric circles in a lensometer?
Answer: Within the recticle
Question 14: What is a distometer used for?
Answer: Measuring vertex distance between the front of the eye and the back of the lens
Question 15: What is a phoropter used for?
Answer: measures the eye's refractive error to help determine and eye prescription
Question 16: What is a poalriscope used for?
Answer: it measures internal stress within lens
Question 17: 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.
Answer: Hyperopia
Question 18: A condition where the eyes have unequal refractive power, greater than 1 diopter.
Answer: Anisometropia
Question 19: A condtion where the two eyes have opposite signs. One eye is Hyperopic and the other eye
is Myopic.
Answer: Antimetropia
Question 20: ANSI standards for horizonal prism.
Answer: 0.66
Question 21: ANSI standarda for vertical prism.
Answer: 0.33
Page 2
Correct Answers (Grade A+)
Question 1: Difficulty accommodating* due to the crystalline lens becoming less elastic.
Answer: Presbyopia
Question 2: Around what wavelenght of light is thought to cause cataracts.
Answer: 460 nm
Question 3: Axis pliers are meant to do what.
Answer: Turn and rotate a lens
Question 4: Cr39 Index and abbe.
Answer: Index 1.49 Abbe 59
Question 5: Crown glass index and abbe.
Answer: Index 1.523 Abbe 60
Question 6: Trivex Index and abbe.
Answer: Index 1.54 Abbe 43-45
Question 7: Polycarbanate index and abbe.
Answer: Index 1.58 Abbe 30
Question 8: Hight index 1.60- 1.67 index and abbe.
Answer: 1.6 abbe 36, 1.67 abbe 32
Question 9: Ultra high index 1.70- 1.7.4 index and abbe.
Answer:
1. 7 abbe 36,
2. 74 abbe 33
Question 10: 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
Page 1
, Question 11: What indication on a frame or glass indicates a pair of saftey glasses.
Answer: ANSI Z87.1
Question 12: 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
Question 13: Where is the concentric circles in a lensometer?
Answer: Within the recticle
Question 14: What is a distometer used for?
Answer: Measuring vertex distance between the front of the eye and the back of the lens
Question 15: What is a phoropter used for?
Answer: measures the eye's refractive error to help determine and eye prescription
Question 16: What is a poalriscope used for?
Answer: it measures internal stress within lens
Question 17: 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.
Answer: Hyperopia
Question 18: A condition where the eyes have unequal refractive power, greater than 1 diopter.
Answer: Anisometropia
Question 19: A condtion where the two eyes have opposite signs. One eye is Hyperopic and the other eye
is Myopic.
Answer: Antimetropia
Question 20: ANSI standards for horizonal prism.
Answer: 0.66
Question 21: ANSI standarda for vertical prism.
Answer: 0.33
Page 2
