Download ABO American Board of Opticianry Certification Exam Review Questions and Answers and more Exams Ophthalmology in PDF only on Docsity!
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
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ABO American Board of Opticianry 2025- ABO Certification Exam Review Questions and Answers | 100% Pass Guaranteed | Graded A+ |
Read All Instructions Carefully and Answer All the
Questions Correctly Good Luck: -
- Which of the following is not generally a factor in determining vertical imbalance? A. Reading depth B. Sphere power in the 90 degree meridan C. Cylinder power in the 90 degree meridan D. Add power - =Answer>> Sphere power in the 90 degree meridian
- The best absorber of infrared radiation is a A. Polycarbonate lens B. Green Glass lens C. CR-39 lens D. Grey 3 Plastic lens - =Answer>> Green Glass lens
- The spherical equivalent of the lens +1.00 -3.00 x90 is A. +0. B. -0. C. +1. D. -1.25 - =Answer>> -0.
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- Aspheric lens surfaces are most helpful when used with which of the following: A. Low powered lenses B. Occluder lenses C. Cataract lenses D. Sunglass lenses - =Answer>> Cataract lenses
- A lens that is cresent shaped with one of the sides measuring a six diopter radius is known as a : A. Periscopic Lens B. Bent Lens C. Meniscus Lens D. None of the Above - =Answer>> Meniscus lens
- Which of the following instruments could be used to verify slab off? A. Polazriscope B. Disometer C. Puillometer D. Lensometer - =Answer>> Lensometer
- An RX with right minus and left plus is a: A. Emmetropic B. Antimetropic C. Hetermetropic D. Isometropic - =Answer>> Antimetropic
- Which of the following is not a type of astigmatism. A. Compound emmetropic B. Simple hyperopic C. Compound myopic D. Simple myopic - =Answer>> Compound emmetropic
- Overall frame measurements are stated in A. Millimeters B. Centimeters C. Decimeters
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- The patient is looking 10 mm below the distance optical center. What is the prismatic effect to the patient from the distance RX at that level? A. 1.00 diapter base up B. 1.00 diapter base down C. 2.00 diapter base up D. 2.00 diapter base down - =Answer>> 1.00 Diapter base down
- If the RX is OS +1.00 +3.00 x45, what would be the total power at axis power 90? A. +1. B. +2. C. +2. D. +2.50 - =Answer>> +2.
- A patient complains that the floor seems to be concave, is possible experiencing excessive A. Base In Prism B. Base Out Prism C. Base Down Prism D. Base Up Prism - =Answer>> Base Down Prism
- What would the reading RX be if the following distance RX and bifocal addition are given: A. +.50 -.25 x B. +1.75 -.25 x C. +2.75 -.25 x D. +1.25 -.25 x90 - =Answer>> +1.75 -.25 x
- Corrected curve lenses have A. Less Divergence B. More Plus Power C. Less Plus Power
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🤔 Hybridgrades101@gmail.com C. A lens with two ploplas D. None of the above - =Answer>> Double Vision
- The optical cross is a graphic representation used to diagram: A. Base curve B. Compensated vertex C. Total lens power D. Corrected curves - =Answer>> Total Lens Power
- Determine imbalance at the reading level in the following prescription (10mm reading depth)
- OD: -4.00 -2.00 x90 OS: -1.00 -3.00 x A. 4 diapters B. 2 diapters C. 1 diapter D. No imbalance - =Answer>> 1 diapter
- The refractive index to which optical tools and gauges are calibrated is A. 1. B. 1. C. 1. D. 1.56 - =Answer>> 1.
- A minus 5 diapter lens decentered in 2mm beyond what is called for to achieve the correct PD creates: A. 1 diapter of base in prism B. 1 diapter of base out prism C. 2 diapters of base in prism D. 2 diapters of base out prism - =Answer>> 1 diapter of base out prism
- Double D lenses are an advantage for presbyobes that: A. Are at least 60 years old
- B Work over their heads
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- C. Golf
- D. Are an advanced presbyope - =Answer>> Work over their heads
- The focal length of a +2.00 diapter lens is A. 200cm B. 25cm C. 100cm D. 50 cm - =Answer>> 50 cm
- Increasing the diameter of a lens always increases its A. Vertex Power B. Thickness C. Add Power D. Radius of Curvature - =Answer>> Thickness
- In the boxing system the A measurement represents: A. Lens depth B. Lens width C. Diameter D. Sag Value - =Answer>> Lens width
- A 10.00 diapter surface measured with a lens clock has a radius of curvature equaling; A. 60mm B. 98.6mm C. 53mm D. 88.3mm - =Answer>> 53mm
- An uncut lens must be at least ____mm in diameter to allow the cutting of a 52mm round lens decentered 4mm in: A. 62 B. 60 C. 58 D. 56 - =Answer>> 60
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- The clear watery fluid that fills the anterior and posterior chambers within the front part of the eye - =Answer>> Aqueous humor
- A refractive error that prevents the light rays from coming to a single focus on the retina because of the different degrees of refraction in the various meridians of the eye - =Answer>> Astigmatism
- A condition in which the crystalline lens of the eye, or its capsule, or both become opaque with consequent loss of visual acuity - =Answer>> Cataract
- The vascular intermediate coat that furnishes nourishment to other parts of the eyeball - =Answer>> Choroid
- That portion of the vascular coat between the iris and the choroid. It consists of ciliary processes and the ciliary muscle - =Answer>> Ciliary body
- The refractive error which results in two points of focus falling behind the retina - =Answer>> Compound hyperopic astigmatism
- The refractive error which results in two points of focus falling in front of the retina - =Answer>> Compound myopic astigmatism
- The clear transparent portion of the outer coat of the eyeball forming the covering of the aqueous chamber - =Answer>> Cornea
- A transparent colorless body suspended in the front part of the eyeball, between the aqueous and the vitreous,
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🤔 Hybridgrades101@gmail.com the function of which is to bring the rays of light to focus on the retina - =Answer>> Crystalline lens
- The seeing of one object as two - =Answer>> Diplopia
- The refractive condition of the normal eye when the eye is at rest, the image of distant objects is brought to a focus on the retina - =Answer>> Emmetropia
- The power of coordination by which the images received by the two eyes become a single image - =Answer>> Fusion
- A small depression in the retina at the back of the eye; the part of the macula adapted for most acute vision
- An ocular disease having as its primary characteristic a sustained increase in intraocular pressure that the eye cannot withstand without damage to its structure or impairment of its function - =Answer>> Glaucoma
- A refractive error in which, because the eyeball is short or the refractive power of the lens is weak, the point of focus for rays of light from distant objects falls behind the retina; accommodation to increase the refractive power of the lens is necessary for distance vision as well as near vision - =Answer>> Hyperopia
- The colored circular membrane suspended behind the cornea and immediately in front of the lens. The iris regulates the amount of light entering the the by changing the size of the pupil - =Answer>> Iris
- A refractive condition caused by a cornea which is damaged and irregular so that rays of light come to many
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- A gradual lessening of the power of accommodation due to a physiologic change that becomes noticeable about the age of 40 years - =Answer>> Presbyopia
- A small spring wire attached nasally to a spectacle frame to lift a drooping lid - =Answer>> Ptosis crutch
- The central opening of the iris through which light is permitted to enter the eye - =Answer>> Pupil
- A refractive condition in which rays of light come to two focal points and is correctable by cylinders - =Answer>> Regular astigmatism
- Innermost coat of the eye, formed of sensitive nerve elements and connected with the optic nerve - =Answer>> Retina
- Two different kinds of cells that form a layer of the retina and act as light receiving media. - =Answer>> Rods and cones
- Visual acuity and color discrimination - =Answer>> Cones
- Employed for motion and vision at low degrees of illumination - =Answer>> Rods
- The white part of the eye, a tough covering which, with the cornea, forms the external protective coat of the eye. - =Answer>> Sclera
- A blind area of reduced vision in the visual field - =Answer>> Scotoma
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- The refractive condition where one point of focus falls on the retina and the other point of focus falls in front of the retina - =Answer>> Simple hyperopic astigmatism
- Given a material of unknown index and the speed of light within that material as 101,000 miles per second. Compute the index of refraction for that material. A. 1. B. 1. C. 1. D. 1.84 - =Answer>> 1.
- Which of the following materials would make the safest lens in all circumstances? A. CR- B. Flint Glass C. Crown D. Polycarbonate - =Answer>> Polycarbonate
- This agency is primarily concerned with safety in the workplace? A. FDA B. ANSI C. FTC
- D..OSHA - =Answer>> OSHA
- The ability of the eye to focus on objects at different distances - =Answer>> Accommodation
- Fresnel optics - =Answer>> Press on prism
- Frame material that resist stretching with heat - =Answer>> Nylon
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- The index of refraction of a material - =Answer>> The speed of light in air divided by the speed light in the material
- The multiple anti reflective of an AR lens stack are designed to - =Answer>> Cause destructive interference to different light colors
- What kind of distortion is characteristic of a high minus lens - =Answer>> Barrel
- When calculating vertical imbalance, what does NOT need to be considered - =Answer>> Cylinder power in the 90 degree meridian
- The index of refraction is lowest in - =Answer>> Air
- Light changing direction when passing from one clear medium to another - =Answer>> Refraction
- The wave particle duality means that light - =Answer>> Displays both particle and wave behavior
- Cloudiness of the crystalline lens - =Answer>> Cataract
- A patient with a PD of 65 chooses a 54-18 frame. What will the decentration be in each eye - =Answer>> 3.5mm in
- Patient PD > - =Answer>> Decentration is out
- Patient PD < - =Answer>> Decentration is in
- Light passing through a prism is bent toward - =Answer>> Base
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- What type of lens surface cannot be accurately measured with a lens clock - =Answer>> Aspheric
- Which has the longest wavelength - =Answer>> Red
- The wavelengths of light visible to humans is between - =Answer>> 380 and 750 nonometers
- A -6.50 lens decentered 2 mm results and how much prism - =Answer>> 1.
- Lens power tolerance standards are defined by - =Answer>> ANSI
- The agency that regulates eye glasses and contact lenses - =Answer>> FDA
- What is the minimum center thickness for a minus lens in a pair of industrial safety glasses - =Answer>> 3.0 mm
- Plastic and tempered glass lenses are considered to be - =Answer>> Impact resistant
- Which tint color most strongly absorbs blue light - =Answer>> Yellow
- Polarized lenses are most effective at blocking - =Answer>> Horizontally polarized glare
- Invisible bifocals can be described as - =Answer>> Vanity lens
- The Gelatinous material filling the central cavity of the eye - =Answer>> Vitreous humor
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- A lens with a focal length of .5 meters has a power of
- _=Answer>>_ 2D
- A lens front surface curve is +4.25 and the back surface curve is -7.00 -.50 X 65. What is the lens power? - =Answer>> -2.75 - 0.50 X 65
- Lens clocks are calibrated to an index of - =Answer>>
- For most frames, standard pantoscopic angle - =Answer>> Is between 8 and 15 degrees from vertical
- Occurs when reading - =Answer>> ▪pupils constrict
- ▪ eyes converge
- ▪lens accommodates
- How many muscles control the movement of the eye
- _=Answer>>_ 6
- When transposing an Rx, the add power - =Answer>> Stays the same
- Reverse slab off always uses __ prism in the lens with the __ in the 90° Meridian - =Answer>> Base down,most plus
- Trifocal lenses should be fit at the - =Answer>> Lower edge of the pupil
- Which lens color level is the darkest - =Answer>> D
- Which frame material is most hypoallergenic - =Answer>> Titanium
- What adjustment is appropriate for a pair of glasses that is too close to the patients left side - =Answer>> Angle
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🤔 Hybridgrades101@gmail.com the left temple inward
- Which of the following RX lenses should never be put in a Z87 Frame? A. 2mm dress lenses B. 3mm non-trademarked lenses C. 3mm tinted/non-trademarked as special purpose lenses D. None of the Above - =Answer>> None of the Above
- If your lensometer reads +0.25 with no lens, a lens that measures -3.00 -1.50 x180 is actually A. -2.75 -1.25 x B. -2.75 -1.50 x C. -3.25 -1.75 x D. -3.25 -1.50 x180 - =Answer>> -3.25 -1.50 x
- When verifying an add on on a 1 piece bifocal with a lens clock, a +2.00 add would clock ____
- in the distance and ______ in the segment. A. +6.12/+8. B. +4.50/-7. C. +4.37/+7. D. +3.75/+1.00 - =Answer>> +6.12/+8.
- What should you do when a consumer comes in and complains of severe eye pain? A. Take a complete history B. Check the eye with an ophthalmoscope C. Refer them back to the eye doctor D. Check the pupillary response to light. - =Answer>> Refer them back to the eye doctor
- The radius of curvature of a six diapter surface is A. 265mm B. 176mm C. 132.5mm
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