ABO Practice Test | Questions with 100% Verified Answers |
Latest Update 2026/2027
Question: Corpuscular
Answer: the theory which explains light as a stream of invisible bundles of energy
Question: Photons
Answer: the visible bundles of energy
Question: Electromagnetic Theory
Answer: The theory which explains light as moving in a series of wave pulsations.
Question: 186,000 miles per second
Answer: the speed of light in air
Question: ray
Answer: a point of light pulsating in a straight line
Question: all colors
Answer: the colors that visible or white light are composed of
Question: base
Answer: a prism will bend light towards its
Question: one meter
Answer: one diopter prism will deviate a ray of light one centimeter in a distance of
Question: apex
Answer: the image being viewed through prism will always be displaced towards its
Question: refraction
Answer: the bending of light as it passed from a medium of lesser density to a medium of greater density is
known as
Question: refractive index
Answer: the speed of light in air divided by the speed of light in a material
Question: optical center
Answer: the single point on an optical lens through which light may pass without being deviated
, Question: converging/against motion
Answer: plus lenses can be characterized by these two attributes
Question: diverging/with motion
Answer: minus lenses can be characterized by these two attributes
Question: minus spheres
Answer: simple myopia or nearsightedness can be corrected with these type of lenses
Question: plus spheres
Answer: simple hyperopia or farsightedness can be corrected with these type of lenses
Question: cylinder lenses
Answer: an eye which requires a different correction in different meridians can be corrected with these type of
lenses
Question: 530 mm
Answer: the radius of curvature of a one diopter lens
Question: +1.75
Answer: The total power of a lens with a +6.00 diopter front surface and a -4.25 diopter back surface lens.
Question: two plus surfaces
Answer: a biconvex lens
Question: 1 meter
Answer: the focal length of a one diopter lens
Question: +3.00 +2.00 x 005
Answer: the correction transposition of the following rx: +5.00 -2.00 x 095
Question: out
Answer: the pupillary distance ground too wide for a plus Rx will result with this type of prism base
Question: out
Answer: the pupillary distance ground too narrow for a minus rx will result with this type of prism base
Question: base in and base in
Answer: this combination of prism is not a canceling situation
Question: base up and base up
Answer: this combination of prism is not a compounding situation
Question: radius of curvature
Answer: not an element of the Prentice Rule formula
Latest Update 2026/2027
Question: Corpuscular
Answer: the theory which explains light as a stream of invisible bundles of energy
Question: Photons
Answer: the visible bundles of energy
Question: Electromagnetic Theory
Answer: The theory which explains light as moving in a series of wave pulsations.
Question: 186,000 miles per second
Answer: the speed of light in air
Question: ray
Answer: a point of light pulsating in a straight line
Question: all colors
Answer: the colors that visible or white light are composed of
Question: base
Answer: a prism will bend light towards its
Question: one meter
Answer: one diopter prism will deviate a ray of light one centimeter in a distance of
Question: apex
Answer: the image being viewed through prism will always be displaced towards its
Question: refraction
Answer: the bending of light as it passed from a medium of lesser density to a medium of greater density is
known as
Question: refractive index
Answer: the speed of light in air divided by the speed of light in a material
Question: optical center
Answer: the single point on an optical lens through which light may pass without being deviated
, Question: converging/against motion
Answer: plus lenses can be characterized by these two attributes
Question: diverging/with motion
Answer: minus lenses can be characterized by these two attributes
Question: minus spheres
Answer: simple myopia or nearsightedness can be corrected with these type of lenses
Question: plus spheres
Answer: simple hyperopia or farsightedness can be corrected with these type of lenses
Question: cylinder lenses
Answer: an eye which requires a different correction in different meridians can be corrected with these type of
lenses
Question: 530 mm
Answer: the radius of curvature of a one diopter lens
Question: +1.75
Answer: The total power of a lens with a +6.00 diopter front surface and a -4.25 diopter back surface lens.
Question: two plus surfaces
Answer: a biconvex lens
Question: 1 meter
Answer: the focal length of a one diopter lens
Question: +3.00 +2.00 x 005
Answer: the correction transposition of the following rx: +5.00 -2.00 x 095
Question: out
Answer: the pupillary distance ground too wide for a plus Rx will result with this type of prism base
Question: out
Answer: the pupillary distance ground too narrow for a minus rx will result with this type of prism base
Question: base in and base in
Answer: this combination of prism is not a canceling situation
Question: base up and base up
Answer: this combination of prism is not a compounding situation
Question: radius of curvature
Answer: not an element of the Prentice Rule formula
