ABO NCLE EXAMS SCRIPT 2026/2027 QUESTIONS AND
SOLUTIONS RATED A+
✔✔If a patient is wearing a +12.00 diopter sphere and the adjustment is made to move
them closer to the eyes, what effect will that have on the effective power of the lens? -
✔✔Decrease the plus power
✔✔Which RX of the following is the same as the following RX: -3.00 +2.50 x 25 - ✔✔-
.50 -2.50 x 115
✔✔Given a material of unknown index and the speed of light within that material as
10100 miles per second. Compute the index of refraction for that material. - ✔✔1.62
✔✔Which of the following materials would make the safest lens in all circumstances? -
✔✔Polycarbonate
✔✔This agency is primarily concerned with safety in the workplace. - ✔✔OSHA
✔✔Which of the following RX lenses should never be put into a Z87 frame? - ✔✔None
of the above (not 2 mm nor 3 mm)
✔✔If your lensometer reads +.25 with no lens, a lens that measures -3.00 -1.50 x 180 is
actually - ✔✔-2.75 -1.50 x 180
✔✔When verifying an ADD on a 1 piece bifocal with a lens clock, a +2.00 ADD would
clock _____ in the distance and _____ in the segment. - ✔✔+6.12, +8.12
✔✔What should you do when a consumer comes in and complains of severe eye pain?
- ✔✔Refer them back to the eye doctor
✔✔The radius of curvature of a six diopter surface is - ✔✔88.3 mm
✔✔The effect to the patient of a diopters of base up prism in each eye is - ✔✔No
perceived vision
✔✔A condition that describes an inflammation of the eyelid margins is - ✔✔Blepharitis
✔✔A Reverse slab off should be applied to the lens with the most - ✔✔Plus
✔✔Which of the following is not generally a factor in determining vertical imbalance? -
✔✔Sphere power in the 90 degree meridian
✔✔The best absorber of infrared radiation is a - ✔✔Green Glass lens
, ✔✔The spherical equivalent of the lens +1.00 -3.00 x 90 is - ✔✔-.50
✔✔A +3.00 lens has the following prismatic effect at 10 mm below the distance optical
center: - ✔✔3 diopters base up
✔✔If the pad arms are shortened (pushed into the frame), this adjustment will - ✔✔Set
the front closer to the face
✔✔If the eyewires are too far from the cheeks the adjustment to take care of this
condition would be to - ✔✔Increase the pantoscopic tilt
✔✔Which of the frame material is an epoxy resin that is recommended by its
manufacturer to be edged with a A box measurement of 5 mm over its marked eye
size? - ✔✔Optyl
✔✔A ptosis crutch is used to give support to the - ✔✔Upper lids
✔✔Aspheric lens surfaces are most helpful when used which of the following: -
✔✔Cataract lens
✔✔A lens that is crescent shaped with one of the sides measuring a six diopter radius is
known as a - ✔✔Meniscus lens
✔✔Which of the following instruments would be used to verify slab-off? -
✔✔Lensometer
✔✔An RX with right minus and left plus is - ✔✔Antimetropic
✔✔Which of the following is not a type of astigmatism: - ✔✔Compound emmetropic
✔✔Overall frame measurements are stated in - ✔✔Milimeters
✔✔The patient is looking 10 mm below the distance optical enter. What is the prismatic
effect to the patient from the distance RX at the level?
RX: OD -2.00 OS -4.00
ADD +2.00 OU - Vertex 12 mm
Flat Top 25 - ✔✔1.00 diopter base down
✔✔If the RX is OS +1.00 +3.00 x 45 what would be the total power at axis 90? -
✔✔+2.50
SOLUTIONS RATED A+
✔✔If a patient is wearing a +12.00 diopter sphere and the adjustment is made to move
them closer to the eyes, what effect will that have on the effective power of the lens? -
✔✔Decrease the plus power
✔✔Which RX of the following is the same as the following RX: -3.00 +2.50 x 25 - ✔✔-
.50 -2.50 x 115
✔✔Given a material of unknown index and the speed of light within that material as
10100 miles per second. Compute the index of refraction for that material. - ✔✔1.62
✔✔Which of the following materials would make the safest lens in all circumstances? -
✔✔Polycarbonate
✔✔This agency is primarily concerned with safety in the workplace. - ✔✔OSHA
✔✔Which of the following RX lenses should never be put into a Z87 frame? - ✔✔None
of the above (not 2 mm nor 3 mm)
✔✔If your lensometer reads +.25 with no lens, a lens that measures -3.00 -1.50 x 180 is
actually - ✔✔-2.75 -1.50 x 180
✔✔When verifying an ADD on a 1 piece bifocal with a lens clock, a +2.00 ADD would
clock _____ in the distance and _____ in the segment. - ✔✔+6.12, +8.12
✔✔What should you do when a consumer comes in and complains of severe eye pain?
- ✔✔Refer them back to the eye doctor
✔✔The radius of curvature of a six diopter surface is - ✔✔88.3 mm
✔✔The effect to the patient of a diopters of base up prism in each eye is - ✔✔No
perceived vision
✔✔A condition that describes an inflammation of the eyelid margins is - ✔✔Blepharitis
✔✔A Reverse slab off should be applied to the lens with the most - ✔✔Plus
✔✔Which of the following is not generally a factor in determining vertical imbalance? -
✔✔Sphere power in the 90 degree meridian
✔✔The best absorber of infrared radiation is a - ✔✔Green Glass lens
, ✔✔The spherical equivalent of the lens +1.00 -3.00 x 90 is - ✔✔-.50
✔✔A +3.00 lens has the following prismatic effect at 10 mm below the distance optical
center: - ✔✔3 diopters base up
✔✔If the pad arms are shortened (pushed into the frame), this adjustment will - ✔✔Set
the front closer to the face
✔✔If the eyewires are too far from the cheeks the adjustment to take care of this
condition would be to - ✔✔Increase the pantoscopic tilt
✔✔Which of the frame material is an epoxy resin that is recommended by its
manufacturer to be edged with a A box measurement of 5 mm over its marked eye
size? - ✔✔Optyl
✔✔A ptosis crutch is used to give support to the - ✔✔Upper lids
✔✔Aspheric lens surfaces are most helpful when used which of the following: -
✔✔Cataract lens
✔✔A lens that is crescent shaped with one of the sides measuring a six diopter radius is
known as a - ✔✔Meniscus lens
✔✔Which of the following instruments would be used to verify slab-off? -
✔✔Lensometer
✔✔An RX with right minus and left plus is - ✔✔Antimetropic
✔✔Which of the following is not a type of astigmatism: - ✔✔Compound emmetropic
✔✔Overall frame measurements are stated in - ✔✔Milimeters
✔✔The patient is looking 10 mm below the distance optical enter. What is the prismatic
effect to the patient from the distance RX at the level?
RX: OD -2.00 OS -4.00
ADD +2.00 OU - Vertex 12 mm
Flat Top 25 - ✔✔1.00 diopter base down
✔✔If the RX is OS +1.00 +3.00 x 45 what would be the total power at axis 90? -
✔✔+2.50
