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National Certification Organization
for Opticians
ABO American Board of Opticianry
Basic ABO Certification Exam
Course Title and Number: Basic ABO Certification Exam Exam Title: Certification Exam Exam Date: Exam 2025- 2026 Instructor: [Insert Instructor’s Name] Student Name: [Insert Student’s Name] Student ID: [Insert Student ID]
Examination
180 minutes
Instructions:
**1. Read each question carefully.
- Answer all questions.
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- Ensure all answers are final before submitting the exam.
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ABO American Board of Opticianry 2025- Basic ABO Certification Exam Review Questions with Correct Answers | 100% Pass Guaranteed | Graded A+ |
Read All Instructions Carefully and Answer All the
Questions Correctly Good Luck: -
- If a patient wanted a plastic frame that has little chance of causing an allergic reaction, which of the following materials should he pick? A) Zyl B) Optyl C) Scandium D) Cellulose Propionate - =Answer>> B) Optyl
- ________ is the most accurate portable device used to measure PD A) Lens Caliper B) Corneal Reflection Pupilometer C) PD ruler D) Lensometer - =Answer>> B) Corneal Reflection Pupilometer
- The ________ of any given shape is double the longest radius of that shape. A) Index of refraction B) Optical axis
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🤔 Hybridgrades101@gmail.com D) Protects investment - =Answer>> D) Protects investment
- Basic impact lenses should have a minimum center thickness of _____ mm. A) 2. B) 1. C) 3. D) 3.50 - =Answer>> C) 3.
- If the right temple is angled up the effect on the frame, the resulting effect on the fit will be to: A) Loosen the right temple B) Raise the right side C) Push the front away from the eye D) Lower the right side - =Answer>> D) Lower the right side
- If the pads are brought closer together, this adjustment will: A) Set the front closer to the face B) Raise the front C) Drop the front D) Loosen the temple tension - =Answer>> B) Raise the front
- Given a lens with a focal length of 1000mm, determine the power of the lens. A) 100 diopters B) 1.00 diopters C) 5.00 diopters D) 10.00 diopters - =Answer>> B) 1.00 diopters
- The axis wheel is marked in degrees from: A) 0 to 180 degrees B) 1 to 180 degrees C) 1 to 360 degrees D) 0 to 360 degrees - =Answer>> B) 1 to 180 degrees
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- Which of the following sets of curves will yield a +4.00 diopter power? A) +4.00 base curve/-4.00 back curve B) +6.00 base curve/ -4.00 back curve C) +4.00 base curve/ +4.00 back curve D) +8.00 base curve/ -4.00 back curve - =Answer>> D) +8.00 base curve/ -4.00 back curve
- Multiple anti-reflective layers are necessary to __________. A) Make the lens hydrophobic B) Make the lens scratch resistant C) Increase the toughness of the lens D) Include multiple light wavelengths - =Answer>> D) Include multiple light wavelengths
- Focal length and power of a lens are ________. A) Directly proportional B) Equal to each other C) Inversely proportional D) Independent of each other - =Answer>> C) Inversely proportional
- In which styles of the frames are the lens edged slightly larger with a flat bevel, but no screws are present to hold the lens in place? A) Bevel rimless B) Drilled rimless C) Hide-a-bevel D) Groove rimless - =Answer>> D) Groove rimless
- If the eyewires are too far from the cheeks the adjustment to take care of this condition would be to:
- A)Increase the pantoscopic tilt
- B) Bend the pad arms up
- C) Spread the pads apart
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🤔 Hybridgrades101@gmail.com C) Mirror effect D) Phantom image - =Answer>> D) Phantom image
- 80 degrees from the specified axis, a cylinder will show: A) 10% of its power B) 50% of its power C) 5% of its power D) 97% of its power - =Answer>> D) 97% of its power
- ______ provided nutrition for outer layers of retina. A) Iris B) Pupil C) Choroid D) Bulbar Conjunctiva - =Answer>> C) Choroid
- A _______ is a condition in which the internal ocular pressure (IOP) of the eye is elevated, causing damage to the optic nerve.
- A)Glaucoma
- B) Cataract
- C) Myopia
- D) Astigmatism - =Answer>> A)Glaucoma
- __________ covers the white part of the eye called Sclera. A) Pupil B) Bulbar Conjunctiva C) Choroid D) Iris - =Answer>> B) Bulbar Conjunctiva
- A patient, who complains that the floor seems to be falling away from him is possibly experiencing excessive: A) Base up prism B) Base in prism C) Base out prism D) Base down prism - =Answer>> A) Base up prism
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- How do anti-reflective lenses provide clearer vision? A) Cause disorienting glare B) Increase light transmission to as much as 99% C) Make the lenses easier to clean D) Extend the life of the lenses - =Answer>> B) Increase light transmission to as much as 99%
- Polarized lenses increase contrast sensitivity by 75% enabling greater _______ and ______. A) Perceptual balance, reaction time B) Visual acuity, clarity of vision C) Glare reduction, UV protection D) True color enhancement, enhanced magnification - =Answer>> B) Visual acuity, clarity of vision
- A lens has a power of +1.00D at 180. What is the total power of the lens? A) +1.00 -2.00 x 180 B) -1.00 +2.00 x 180 C) +1.00 -1.00 x 090 D) +1.00 -1.00 x 180 - =Answer>> B) -1.00 +2.00 x 180
- Which of the following is NOT a type of asphericity? A) Progressive B) Optical C) Cylindrical D) Geometric - =Answer>> C) Cylindrical
- "Plano" means: A) Astigmatism B) Myopia C) No correction needed D) Hyperopia - =Answer>> C) No correction needed
- _______ is a spring loaded clamp that rests on the surface of the lens.
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🤔 Hybridgrades101@gmail.com A) Chromatic aberration B) Achromatic aberration C) Isochromatic aberration D) Coma aberration - =Answer>> A) Chromatic aberration
- Which of the following described symmetrical design for progressive lenses? A) Lenses employee a short, rapid power progression B) Lenses are designed as true rights and lefts C) The same design is incorporated across the add range D) The same design is used for both right and left lenses for all base curves and add powers - =Answer>> D) The same design is used for both right and left lenses for all base curves and add powers
- A ptosis crutch is used to give support to: A) Upper lid B) Nose pads C) Nasal bridge D) Lower lid - =Answer>> A) Upper lid
- Which of the following is a possible symptom of excessive base down prism? A) Objects appear larger B) Objects appear to be going "downhill" C) Objects appear smaller D) Objects appear to be going "uphill" - =Answer>> D) Objects appear to be going "uphill"
- Which muscle of the eye rotates the vertical and horizontal axis of the eye toward the nose? A) Inferior Oblique B) Lateral Rectus C) Medial Rectus D) Superior Oblique - =Answer>> D) Superior Oblique
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- Which one of the following is not an element of the spectacle magnification formula? A) Dioptric power B) Vertex distance C) Abbe value D) Front curvature - =Answer>> C) Abbe value
- What are the 3 key settings of the distance setting dial in a pupilometer? A) 100 cm, 65 cm, 40 cm B) Infinity, 65 cm, 40 cm C) Infinity, 70 cm, 40 cm D) 100 cm, 70 cm, 35 cm - =Answer>> B) Infinity, 65 cm, 40 cm
- Which type of lens design has one point of focus? A) Single vision B) Bifocal C) Trifocal D) Progressive - =Answer>> A) Single vision
- What are the types of lenses require the monocular distance PD measurement using the pupilometer? A) Flat top multifocal B) Progressive C) Cylindrical D) Single vision near - =Answer>> B) Progressive
- As the pantoscopic angle is increased: A) The spherical equivalent is increased B) The optical centers should be lowered C) The optical centers are effectively raised D) The spherical equivalent is decreased - =Answer>> C) The optical centers are effectively raised
- What is the frame pupillary distance of the following frame?
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🤔 Hybridgrades101@gmail.com B) 60 C) 30 D) 31.5 - =Answer>> C) 30
- It is recommended that the optical center of the lens be lowered 1mm for every __________. A) 2 degrees of pantoscopic tilt B) 1 degree of segment inset C) 1 degree of pantoscopic tilt D) 2 degrees of positive face form - =Answer>> A) 2 degrees of pantoscopic tilt
- Which of the following materials is primary sold as an alternative to thick and bulgy lenses? A) Periscopic B) Polycarbonate C) 1.74 high index D) Aspheric - =Answer>> D) Aspheric
- The amount of light entering the eye is controlled by the ______ A) Pupil B) Fovea C) Crystalline lens D) Iris - =Answer>> D) Iris
- Which term applies to the pupillary measurement that indicated the distance from the center of one pupil in one eye to the center of the pupil in the other eye? A) Binocular B) Illuminated C) Reflexive D) Monocular - =Answer>> A) Binocular
- Prism is read in lensometer using the: A) Spotting device B) Power drum
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🤔 Hybridgrades101@gmail.com C) Lens holder D) Reticle - =Answer>> D) Reticle
- For cosmetic reasons, it is best to pick a frame that: A) Has a frame PD that matches the patients B) Positions the eyes slightly above the center horizontal plane C) Has a frame PD wider than the patients D) Has a frame PD narrower than the patients - =Answer>> A) Has a frame PD that matches the patients
- The scratch coating that is currently being used in some AR technology is superior to traditional coatings because it is: A) Hard and flexible B) Four layers thick C) UV filtering D) Tintable - =Answer>> A) Hard and flexible
- One of the best filters of infrared light is: A) Green crown glass B) Clear high index C) Polycarbonate D) 1.50 - =Answer>> A) Green crown glass
- Which of the following is a characteristic of a plus lens? A) With motion movement B) Minify objects C) Against motion movement D) Virtual focal length - =Answer>> C) Against motion movement
- Which of the following is a possible symptom of excessive base up prism? A) Objects appear to be going "uphill" B) Objects appear to be going "downhill"
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🤔 Hybridgrades101@gmail.com C) Diverge D) Converge - =Answer>> D) Converge
- What does face form refer to? A) Style of frame B) Shape of the face C) The gentle vertical facial frame angle D) The gentle horizontal facial frame wrap - =Answer>> D) The gentle horizontal facial frame wrap
- Which type of lens deign has distinct distance, intermediate, and near focal lengths? A) Single vision B) Trifocal C) Bifocal D) Progressive - =Answer>> B) Trifocal
- Which of the following lenses has the longest focal length? A) +0.25 diopters B) +10.00. diopters C) +0.50 diopters D) -3.00 diopters - =Answer>> A) +0.25 diopters
- The approximate power of a lens as determined by a front clock reading of a +2.00 and a back clock reading of -5.00 is: A) -3. B) +5. C) +3. D) -5.00 - =Answer>> A) -3.
- Jamie, a dispenser wants to orient the target to determine the location of the cylinder power. Which part of the lensometer will help? A) Axis wheel B) Power drum
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🤔 Hybridgrades101@gmail.com C) Lens holder D) Spotting device - =Answer>> A) Axis wheel
- Axis readings may be between: A) 0- B) 0- C) 0- D) 90-180 - =Answer>> C) 0-
- In the pupillary distance is measure while the patient is focusing on a point 16 inches in front of his eyes, the PD measured is known as the _______ PD. A) Near B) Distance C) Most accurate D) Intermediate - =Answer>> A) Near
- The term for the refractive condition where light comes to a focus in front of the retina is? A) Astigmatism B) Myopia C) Hyperopia D) Emmetropia - =Answer>> B) Myopia
- What are the factors considered in computing the power of a thick lens? A) Front curve, thickness, diameter and index B) Front curve, back curve, segment type, and index C) Front curve, back curve, thickness and index D) Back curve, thickness, diameter and index - =Answer>> C) Front curve, back curve, thickness and index
- There are approximately _____ million rods located mainly in the periphery of the retina and ______ million cones located centrally in retina. Place them in the correct order. A) 160, 2
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🤔 Hybridgrades101@gmail.com C) Astigmatism D) Hyperopia - =Answer>> D) Hyperopia
- A term used to describe a lens that effectively matched surface curves and power is: A) Periscopic B) Best form C) Meniscus D) Aspheric - =Answer>> B) Best form
- Which of the following is not an attribute of Monel? A) Hypo-allergenic B) Easy to adjust C) Economical D) Can be easily soldered - =Answer>> A) Hypo-allergenic
- The prism is checked at the _____ (prism reference point) on a progressive lens A) Optical center B) Temporal side C) Axis D) Near add power - =Answer>> A) Optical center
- Which of the following instruments would be used to verify slab-off? A) Distometer B) Pupilometer C) Lensometer D) Polariscope - =Answer>> C) Lensometer
- Which of the following could cause a patient to complain about distant objects appearing smaller? A) An increase in minus power B) A decrease in add power C) An increase in plus power D) A change in cylinder - =Answer>> A) An increase in minus power
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- You need to identify a single vision lens. What might you do first while using a lensometer? A) Place the lens blank/eyewear on the stage B) Release the lens holder C) Adjust the patient D) Focus the eyepiece - =Answer>> D) Focus the eyepiece
- Which of the following makes up 90% of the corneas mass? A) Stroma B) Epithelium C) Endothelium D) Descemets Membrane - =Answer>> A) Stroma
- The 6 extraocular muscles responsible for stabilization of the eye are: A) Lateral nasal, Medial temporal, Superior Rectus, Inferior Rectus, superior oblique, inferior oblique B) Lateral Rectus, Medial Rectus, superior Rectus, inferior Rectus, superior oblique, inferior oblique C) Nasal Rectus, temporal Rectus, superior Rectus, inferior Rectus, superior oblique, inferior oblique D) Lateral Rectus, medial Rectus, superior Rectus, inferior Rectus, nasal oblique, temporal oblique - =Answer>> B) Lateral Rectus, Medial Rectus, superior Rectus, inferior Rectus, superior oblique, inferior oblique
- Sagittal value, or sag, is an indicator of: A) Lens thickness or depth B) Lens index of refraction C) Lens dioptric power D) Lens multifocal style - =Answer>> A) Lens thickness or depth
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