ABO 2023 EXAM PRE-TEST GRADED A+ ABO Exam 2023 Solved 100% ABO Exam 2023 with Complete Solutions ABO Exam 2023 with Complete Solutions ABO 2023 Practice Test Solved 100% ABO Practical Exam 2023 ABO practice exam solved 100% Correct ABO Exam Prep 3 -Solved-Lens form and analysis ABO Exam Prep Part 7...
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150 mm - ANSWER-When ordering a six inch temple, its corresponding millimeter value is which of the following? A. 135 mm B. 140 mm C. 145 mm D. 150 mm 500 mm - ANSWER-What is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters Nanometers - ANSWER-Wavel...
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Add to cart150 mm - ANSWER-When ordering a six inch temple, its corresponding millimeter value is which of the following? A. 135 mm B. 140 mm C. 145 mm D. 150 mm 500 mm - ANSWER-What is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters Nanometers - ANSWER-Wavel...
Change a bifocal Rx to a single vision Rx - ANSWER-Add the bifocal power to the sphere powers. OD: -0.50 OS: -0.25-0.25x172 Add: +1.75 Turns into- OD: +1.25 OS: +1.50-0.25x172 Anisometropia - ANSWER-There is a difference of 3 diopters between both eyes; when the vision of the eyes differs...
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Add to cartChange a bifocal Rx to a single vision Rx - ANSWER-Add the bifocal power to the sphere powers. OD: -0.50 OS: -0.25-0.25x172 Add: +1.75 Turns into- OD: +1.25 OS: +1.50-0.25x172 Anisometropia - ANSWER-There is a difference of 3 diopters between both eyes; when the vision of the eyes differs...
The extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are _______of these muscles. - ANSWER-Six The fibrous tunic is comprised of the: - ANSWER-Sclera and cornea Fusion occurs: - ANSWER-In the brain The aqueous fluid is continual...
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Add to cartThe extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are _______of these muscles. - ANSWER-Six The fibrous tunic is comprised of the: - ANSWER-Sclera and cornea Fusion occurs: - ANSWER-In the brain The aqueous fluid is continual...
When discussing thick lenses, the factors which are considered in computing the lens power are: a. front curve, thickness and index b. back curve, thickness and index c. front curve, back curve and thickness d. front curve, back curve, thickness and index - ANSWER-d. front curve, back curve, t...
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Add to cartWhen discussing thick lenses, the factors which are considered in computing the lens power are: a. front curve, thickness and index b. back curve, thickness and index c. front curve, back curve and thickness d. front curve, back curve, thickness and index - ANSWER-d. front curve, back curve, t...
If the wearer complains of the bifocal line being somewhat in his way when driving, the problem may be alleviated by decreasing the distance between pads. True or False - ANSWER-False If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is that: ...
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Add to cartIf the wearer complains of the bifocal line being somewhat in his way when driving, the problem may be alleviated by decreasing the distance between pads. True or False - ANSWER-False If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is that: ...
Single Vision - ANSWER-corrects for one distance Multifocal - ANSWER-Corrects with two or more prescriptions (or 'powers') Bifocal - ANSWER-lens having two focus strengths Trifocal - ANSWER-pertaining to having three focus strengths Calculating Prismatic Effects - ANSWER-obtained at th...
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Add to cartSingle Vision - ANSWER-corrects for one distance Multifocal - ANSWER-Corrects with two or more prescriptions (or 'powers') Bifocal - ANSWER-lens having two focus strengths Trifocal - ANSWER-pertaining to having three focus strengths Calculating Prismatic Effects - ANSWER-obtained at th...
Corpuscular - ANSWER-the theory which explains light as a stream of invisible bundles of energy Photons - ANSWER-the visible bundles of energy Electromagnetic Theory - ANSWER-The theory which explains light as moving in a series of wave pulsations. 186,000 miles per second - ANSWER-the spee...
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Add to cartCorpuscular - ANSWER-the theory which explains light as a stream of invisible bundles of energy Photons - ANSWER-the visible bundles of energy Electromagnetic Theory - ANSWER-The theory which explains light as moving in a series of wave pulsations. 186,000 miles per second - ANSWER-the spee...
The extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are _______of these muscles. - ANSWER-Six The fibrous tunic is comprised of the: - ANSWER-Sclera and cornea Fusion occurs: - ANSWER-In the brain The aqueous fluid is continual...
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Add to cartThe extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are _______of these muscles. - ANSWER-Six The fibrous tunic is comprised of the: - ANSWER-Sclera and cornea Fusion occurs: - ANSWER-In the brain The aqueous fluid is continual...
Most ophthalmic frames today are measured utilizing the boxing system of measurement. In this system the B measurement represents the ______. A. lens difference B. the lens width C. the lens depth D. the effective diameter - ANSWER-C. the lens depth The boxing method of measurement is espe...
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Add to cartMost ophthalmic frames today are measured utilizing the boxing system of measurement. In this system the B measurement represents the ______. A. lens difference B. the lens width C. the lens depth D. the effective diameter - ANSWER-C. the lens depth The boxing method of measurement is espe...
To determine the power of a thin lens in air, it is necessary to consider: A. front curve and index of refraction B. back curve and index of refraction C. index of refraction only D. front curve, back curve and index of refraction - ANSWER-D. front curve, back curve and index of refraction ...
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Add to cartTo determine the power of a thin lens in air, it is necessary to consider: A. front curve and index of refraction B. back curve and index of refraction C. index of refraction only D. front curve, back curve and index of refraction - ANSWER-D. front curve, back curve and index of refraction ...
Prentice's Rule - ANSWER-P = f x c P = amount of prism correction f = lens power (in diopters) c = decentration (the distance between the pupil centre and the lens's optical centre, in millimeters) Cornea IOR - ANSWER-1.37 Tear Film, Vitreous IOR - ANSWER-1.33 Crystalline lens IOR - AN...
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Add to cartPrentice's Rule - ANSWER-P = f x c P = amount of prism correction f = lens power (in diopters) c = decentration (the distance between the pupil centre and the lens's optical centre, in millimeters) Cornea IOR - ANSWER-1.37 Tear Film, Vitreous IOR - ANSWER-1.33 Crystalline lens IOR - AN...
Resolving Prism= - ANSWER-Vertical = (prism)(sin angle) Horizontal = (prism) (cos angle) Resultant Prism= - ANSWER-The square root of (Vertical prism^2) + (Horizontal prism^2) tan a=V/H Shape Factor= - ANSWER-1/1-(T/NxF) T=center thickness in m N= index of refraction of lens material F= ...
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Add to cartResolving Prism= - ANSWER-Vertical = (prism)(sin angle) Horizontal = (prism) (cos angle) Resultant Prism= - ANSWER-The square root of (Vertical prism^2) + (Horizontal prism^2) tan a=V/H Shape Factor= - ANSWER-1/1-(T/NxF) T=center thickness in m N= index of refraction of lens material F= ...
Lensometer - ANSWER-Optical instrument used to verify lens from a known Rx as well as neutralizing a lens from unknown Rx Adjustable eyepiece - ANSWER-Part of a lensometer that must be first adjusted; power drum must be set to 0 Auxiliary prism ring - ANSWER-Part of a lensometer that expands t...
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Add to cartLensometer - ANSWER-Optical instrument used to verify lens from a known Rx as well as neutralizing a lens from unknown Rx Adjustable eyepiece - ANSWER-Part of a lensometer that must be first adjusted; power drum must be set to 0 Auxiliary prism ring - ANSWER-Part of a lensometer that expands t...
Accommodation - ANSWER-Focusing of the eye on a near object through relaxation of the ciliary muscle and thickening of the lens. Amblyopia - ANSWER-The loss of vision without any apparent disease of the eye. Ametropia - ANSWER-A refractive error in which the eye, when in a state of rest, does ...
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Add to cartAccommodation - ANSWER-Focusing of the eye on a near object through relaxation of the ciliary muscle and thickening of the lens. Amblyopia - ANSWER-The loss of vision without any apparent disease of the eye. Ametropia - ANSWER-A refractive error in which the eye, when in a state of rest, does ...
Bifocals - ANSWER-This lens design is used for the correction of presbyopia & are needed to replace plus power which has been lost to the crystalline lens Reading addition - ANSWER-The power of the bifocal segment that is always plus Spherical component of the carrier lens - ANSWER-The power o...
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Add to cartBifocals - ANSWER-This lens design is used for the correction of presbyopia & are needed to replace plus power which has been lost to the crystalline lens Reading addition - ANSWER-The power of the bifocal segment that is always plus Spherical component of the carrier lens - ANSWER-The power o...
What type of visual error is indicated by this Rx? Rx +2.00 -1.00 x 090 a. simple hyperopia b. compound hyperopic astigmatism c. compound myopic astigmatism d. mixed astigmatism - ANSWER-b. compound hyperopic astigmatism Increasing the diameter of a minus power lens always increases its: a. ...
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Add to cartWhat type of visual error is indicated by this Rx? Rx +2.00 -1.00 x 090 a. simple hyperopia b. compound hyperopic astigmatism c. compound myopic astigmatism d. mixed astigmatism - ANSWER-b. compound hyperopic astigmatism Increasing the diameter of a minus power lens always increases its: a. ...
Aberration + types of abberation - ANSWER-deviation from a single focus of light rays from one source; failure to bring light rays to a single focal point two types: chromatic and monochromatic Accomodation - ANSWER-the ability of the eye to adjust focus for varying distances Achromatic - ANS...
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Add to cartAberration + types of abberation - ANSWER-deviation from a single focus of light rays from one source; failure to bring light rays to a single focal point two types: chromatic and monochromatic Accomodation - ANSWER-the ability of the eye to adjust focus for varying distances Achromatic - ANS...
3 eye layers/tunics - ANSWER-Layer #1- Protective Layer #2- Nourishing Later #3- Light Sensitive Cellulose Acetate (Zyle) - ANSWER-Non-flammable, durable, avail in diff colors Layer #1 - ANSWER-Sclera, Cornea, Anterior Chamber Layer 2 - ANSWER-Choroid, Ciliary Body, Iris, Crystalline Lens...
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Add to cart3 eye layers/tunics - ANSWER-Layer #1- Protective Layer #2- Nourishing Later #3- Light Sensitive Cellulose Acetate (Zyle) - ANSWER-Non-flammable, durable, avail in diff colors Layer #1 - ANSWER-Sclera, Cornea, Anterior Chamber Layer 2 - ANSWER-Choroid, Ciliary Body, Iris, Crystalline Lens...
When light is refraction by a prism it is: a. Bent toward the apex b, Bent toward the base c. Not bent d. Reflected - ANSWER-B. Bent toward the base A prism always bends light toward its base. Prisms: I. Always bend light toward the base II. Always bend light toward the apex III. Cause ch...
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Add to cartWhen light is refraction by a prism it is: a. Bent toward the apex b, Bent toward the base c. Not bent d. Reflected - ANSWER-B. Bent toward the base A prism always bends light toward its base. Prisms: I. Always bend light toward the base II. Always bend light toward the apex III. Cause ch...
The refractive astigmatism indicated by the RX +1.50 -1.75 x 35 is - ANSWER-Mixed The patient's RX is -1.75 -.50 x 120 with a +2.00 ADD standard trifocal. What is the power through the intermediate? - ANSWER--.75 -.50 x 120 The Geneva lens measure is designed to measure - ANSWER-Lens curvat...
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Add to cartThe refractive astigmatism indicated by the RX +1.50 -1.75 x 35 is - ANSWER-Mixed The patient's RX is -1.75 -.50 x 120 with a +2.00 ADD standard trifocal. What is the power through the intermediate? - ANSWER--.75 -.50 x 120 The Geneva lens measure is designed to measure - ANSWER-Lens curvat...
What parts of the human eye can be related to the lens, focusing mechanism and film of a camera? A) Cornea, iris and retina B) Cornea, lens and iris C) Cornea, lens and retina D) Lens, iris and retina - ANSWER-C) Cornea, lens and retina What part of the retina lies on the visual axis? ...
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Add to cartWhat parts of the human eye can be related to the lens, focusing mechanism and film of a camera? A) Cornea, iris and retina B) Cornea, lens and iris C) Cornea, lens and retina D) Lens, iris and retina - ANSWER-C) Cornea, lens and retina What part of the retina lies on the visual axis? ...
Index of refraction - ANSWER-The speed of light in air divided by the speed of light in material Specific gravity - ANSWER-The weight in grams of one cubic centimeter of any given material Abbe number - ANSWER-A relative measure of dispersion or color distortion of a lens; a.k.a. V-value 1....
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Add to cartIndex of refraction - ANSWER-The speed of light in air divided by the speed of light in material Specific gravity - ANSWER-The weight in grams of one cubic centimeter of any given material Abbe number - ANSWER-A relative measure of dispersion or color distortion of a lens; a.k.a. V-value 1....
Accommodation - ANSWER-Focusing of the eye on a near object through relaxation of the ciliary muscle and thickening of the lens. Amblyopia - ANSWER-The loss of vision without any apparent disease of the eye. Ametropia - ANSWER-A refractive error in which the eye, when in a state of rest, does ...
Preview 1 out of 4 pages
Add to cartAccommodation - ANSWER-Focusing of the eye on a near object through relaxation of the ciliary muscle and thickening of the lens. Amblyopia - ANSWER-The loss of vision without any apparent disease of the eye. Ametropia - ANSWER-A refractive error in which the eye, when in a state of rest, does ...
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