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ABO VOCABULARY

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Deviation from a single focus of light rays emanating from one source   show
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The ability of the eye to adjust focus for varying distances   show
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show Achromatic  
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show Acuity  
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Difference in plus power between the reading and distance portions of a multifocal lens   show
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Loss of vision without any apparent diseas of the eye   show
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show Ametropia  
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show Aniseikonia  
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show Anisometropia  
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Front cavity or compartment of the eye, located between the cornea and crystalline lens. Contains the Aqueous Humor   show
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show Apex  
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show Aphakia  
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show Aspheric  
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show Astigmatism  
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show Axis  
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Thickest edge of a prism   show
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show Base Curve  
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show Beam  
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show Binocular  
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show Caliper  
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show Canthus  
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A condition when the crystalline lens of the eye becomes opaque   show
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show Congenital Cataract  
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The lens has become either solid and shrunken or soft and liquid   show
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show incipient Cataract  
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show Mature Cataract  
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show Senile Cataract  
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show Traumatic Cataract  
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Vasculair layer of the eye; its function is to nourish the other parts of the eye, primarily the retina   show
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show Chromatic Abberation  
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The thick rim of the choroid to which the crystalline lens is attached   show
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The refractive error which results in two points of focus falling behind the retina. +1.00 +2.00 x090   show
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The refractive error which results in two points of focus falling in front of the retina -1.00-2.00x090   show
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show Cones  
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The clear membrane that lines the eyelids and covers exposed surface of the eyeball   show
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show Conjunctivitis  
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show Cornea  
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show Crown Glass  
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show Crystalline Lens  
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show Cyclopegia  
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show Decentration  
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show Diffusion  
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Unit of measurement of the refractive power of a lens   show
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The seeing of one object as two, due to uneven tracking of the eyes. Commonly know as double vision   show
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show Distortion  
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show Divergent  
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The refractive condition of a normal eye. When the eye is at rest, the image of distant objects is brought to focus on the retina.   show
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A tendency for one eye to deviate of the visual axis toward the other eye   show
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Actual deviation of one eye toward the visual axis of the other eye (cross eyed)   show
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A tendency for one eye to deviate off the visual axis away from the other eye   show
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Point in space which is sharply focused on the retina with the eye's accommodation relaxed   show
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A glass of high refractive index 1.65 containing lead   show
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show Focus  
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A small depression in the retina, at the back of the eye. It is part of the macula adapted for the clearest vision   show
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The power of coordination by which the images received by the two eyes become a single image   show
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