ABO Practice Test reviewed questions and correct answers GRADED A+

ABO PRACTICE TEST
REVIEWED QUESTIONS
AND CORRECT ANSWERS
GRADED A+ 2025-2026
Corpuscular - ANS-the theory which explains light as a stream of invisible bundles of
energy


Photons - ANS-the visible bundles of energy


Electromagnetic Theory - ANS-The theory which explains light as moving in a series of
wave pulsations.


186,000 miles per second - ANS-the speed of light in air


ray - ANS-a point of light pulsating in a straight line


all colors - ANS-the colors that visible or white light are composed of


base - ANS-a prism will bend light towards its


one meter - ANS-one diopter prism will deviate a ray of light one centimeter in a
distance of


apex - ANS-the image being viewed through prism will always be displaced towards its

, refraction - ANS-the bending of light as it passed from a medium of lesser density to a
medium of greater density is known as


refractive index - ANS-the speed of light in air divided by the speed of light in a
material


optical center - ANS-the single point on an optical lens through which light may pass
without being deviated


converging/against motion - ANS-plus lenses can be characterized by these two
attributes


diverging/with motion - ANS-minus lenses can be characterized by these two attributes


minus spheres - ANS-simple myopia or nearsightedness can be corrected with these
type of lenses


plus spheres - ANS-simple hyperopia or farsightedness can be corrected with these
type of lenses


cylinder lenses - ANS-an eye which requires a different correction in different
meridians can be corrected with these type of lenses


530 mm - ANS-the radius of curvature of a one diopter lens


+1.75 - ANS-The total power of a lens with a +6.00 diopter front surface and a -4.25
diopter back surface lens.


two plus surfaces - ANS-a biconvex lens


1 meter - ANS-the focal length of a one diopter lens