CERTIFIED PARAOPTOMETRIC (CPO)
EXAM Questions And Verified Answers
Latest 2026 Update | Graded A+ | 100%
Success
High-Index Lenses - Correct Answer -The thinnest lens materials and thus provide
a better cosmetic appearance for spectacles in higher prescriptions.
Eyewire - Correct Answer -The part of the frame that surrounds each lens. The
_______ holds the lens in place in the frame front.
Bridge - Correct Answer -The part of the frame that connects the two eyewires
together and supports the frame on the patient's nose.
Hinge - Correct Answer -Connects the frame front to the temples. The hinge
allows the temples to fold in behind the frame front so that the spectacles will
occupy less space and fit into a case or pocket.
,Nosepads - Correct Answer -Are located on the eyewire, near the area where the
bridge is attached. They distribute the weight of the frame onto the sides of the
nose to make the frame more comfortable to wear.
Temples - Correct Answer -Extend from the frame front, back alongside the head,
and over the ear of the wearer. Temples are made up of the butt portion, dowel
hole, shield, bend, and earpiece.
"A" Measurement - Correct Answer -Eyesize; the widest horizontal dimension of
the lens opening.
"B" Measurement - Correct Answer -The most vertical dimension of the lens
opening.
"ED" (effective diameter) - Correct Answer -Measures the largest diameter
through the lens. By representing the widest part of the lens, you can determine
what size lens blank must be used in order to have the lens fit in the frame.
Distance Between Lenses (DBL) - Correct Answer -Also known as the Bridge size,
represents the distance separating the two lenses.
,Pupillary Distance - Correct Answer -The distance between the centers of the pupil
of each eye.
Seg height - Correct Answer -The height of the reading portion of a multi-focal
lens as measured from the deepest part of the eyewire to a reference point, such
as the lower eyelid or pupil center.
Vertex Distance - Correct Answer -Describes the distance from the back of the
glasses lens to the cornea.
Pantoscopic Angle (Tilt) - Correct Answer -Refers to the angle the temple of the
frame makes with the frame front. The bottom should be closer to the cheeks
than the top of the eyewire is to the eyebrows.
_______lenses are also called convex lenses. They are thick in the center and thin
on the edges. Light rays passing through these lenses will be converged. - Correct
Answer -Plus lenses
, _______lenses are thin in the center and thick on the edges. Objects viewed
through these lenses will appear smaller or minified. Light rays passing through
these lenses will be diverged. - Correct Answer -Minus lenses
What instrument is used to verify the spectacle prescription? - Correct Answer -
Lensometer
When viewing a lens through the instrument above, you take the following
measurements: sphere +2.50, cylinder -1.75, axis 172. How would the prescription
for this lens be written? - Correct Answer -+2.50 -1.75 x172
True or False:
A prism's shape is similar to a pyramid. - Correct Answer -True
True or False:
Light moving through a prism is bent toward the apex - Correct Answer -False
True or False:
One prism diopter will bend a ray of light 1 centimeter for every 1 meter of
distance. - Correct Answer -True
EXAM Questions And Verified Answers
Latest 2026 Update | Graded A+ | 100%
Success
High-Index Lenses - Correct Answer -The thinnest lens materials and thus provide
a better cosmetic appearance for spectacles in higher prescriptions.
Eyewire - Correct Answer -The part of the frame that surrounds each lens. The
_______ holds the lens in place in the frame front.
Bridge - Correct Answer -The part of the frame that connects the two eyewires
together and supports the frame on the patient's nose.
Hinge - Correct Answer -Connects the frame front to the temples. The hinge
allows the temples to fold in behind the frame front so that the spectacles will
occupy less space and fit into a case or pocket.
,Nosepads - Correct Answer -Are located on the eyewire, near the area where the
bridge is attached. They distribute the weight of the frame onto the sides of the
nose to make the frame more comfortable to wear.
Temples - Correct Answer -Extend from the frame front, back alongside the head,
and over the ear of the wearer. Temples are made up of the butt portion, dowel
hole, shield, bend, and earpiece.
"A" Measurement - Correct Answer -Eyesize; the widest horizontal dimension of
the lens opening.
"B" Measurement - Correct Answer -The most vertical dimension of the lens
opening.
"ED" (effective diameter) - Correct Answer -Measures the largest diameter
through the lens. By representing the widest part of the lens, you can determine
what size lens blank must be used in order to have the lens fit in the frame.
Distance Between Lenses (DBL) - Correct Answer -Also known as the Bridge size,
represents the distance separating the two lenses.
,Pupillary Distance - Correct Answer -The distance between the centers of the pupil
of each eye.
Seg height - Correct Answer -The height of the reading portion of a multi-focal
lens as measured from the deepest part of the eyewire to a reference point, such
as the lower eyelid or pupil center.
Vertex Distance - Correct Answer -Describes the distance from the back of the
glasses lens to the cornea.
Pantoscopic Angle (Tilt) - Correct Answer -Refers to the angle the temple of the
frame makes with the frame front. The bottom should be closer to the cheeks
than the top of the eyewire is to the eyebrows.
_______lenses are also called convex lenses. They are thick in the center and thin
on the edges. Light rays passing through these lenses will be converged. - Correct
Answer -Plus lenses
, _______lenses are thin in the center and thick on the edges. Objects viewed
through these lenses will appear smaller or minified. Light rays passing through
these lenses will be diverged. - Correct Answer -Minus lenses
What instrument is used to verify the spectacle prescription? - Correct Answer -
Lensometer
When viewing a lens through the instrument above, you take the following
measurements: sphere +2.50, cylinder -1.75, axis 172. How would the prescription
for this lens be written? - Correct Answer -+2.50 -1.75 x172
True or False:
A prism's shape is similar to a pyramid. - Correct Answer -True
True or False:
Light moving through a prism is bent toward the apex - Correct Answer -False
True or False:
One prism diopter will bend a ray of light 1 centimeter for every 1 meter of
distance. - Correct Answer -True
