Virginia Optician Licensure Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which part of a spectacle prescription indicates the correction needed
for astigmatism?
A. Sphere
B. Prism
C. Add
D. Cylinder
Rationale: The cylinder value specifies the power required to correct
astigmatism by compensating for unequal curvature of the cornea or lens.
2. A lens that is thicker at the center and thinner at the edges is classified
as:
A. Concave
B. Plano
C. Convex
D. Cylindrical
Rationale: Convex lenses converge light rays and are commonly prescribed
for hyperopia (farsightedness).
, 3. The instrument primarily used to verify lens power is a:
A. Keratometer
B. Retinoscope
C. Ophthalmoscope
D. Lensometer
Rationale: A lensometer measures sphere, cylinder, axis, prism, and add
power in ophthalmic lenses.
4. The optical center of a lens is the point where:
A. The lens is thickest
B. Light passes without prism effect
C. Lens markings are located
D. Axis measurements begin
Rationale: The optical center is the point through which light passes
without deviation, producing no prism effect.
5. Which lens material generally has the highest impact resistance?
A. Crown glass
B. CR-39
C. Trivex
D. Polycarbonate
Rationale: Polycarbonate lenses are highly impact resistant and widely
used for safety and pediatric eyewear.
6. The abbreviation PD stands for:
A. Prism Distance
B. Power Deviation
C. Pupillary Distance
D. Pupil Diameter
, Rationale: Pupillary distance measures the distance between pupils and is
essential for proper lens centration.
7. A prescription written as -2.00 DS indicates:
A. Hyperopia with astigmatism
B. Astigmatism only
C. Presbyopia
D. Myopia without astigmatism
Rationale: A negative sphere power corrects myopia, and DS indicates no
cylinder correction is present.
8. Which eye structure primarily focuses incoming light onto the retina?
A. Retina
B. Iris
C. Cornea
D. Choroid
Rationale: The cornea provides most of the eye’s refractive power.
9. The axis in a spectacle prescription is measured in:
A. Diopters
B. Millimeters
C. Radians
D. Degrees
Rationale: Cylinder axis is expressed from 1° to 180° to indicate the
orientation of astigmatic correction.
10. Presbyopia results primarily from:
A. Increased corneal curvature
B. Retinal degeneration
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which part of a spectacle prescription indicates the correction needed
for astigmatism?
A. Sphere
B. Prism
C. Add
D. Cylinder
Rationale: The cylinder value specifies the power required to correct
astigmatism by compensating for unequal curvature of the cornea or lens.
2. A lens that is thicker at the center and thinner at the edges is classified
as:
A. Concave
B. Plano
C. Convex
D. Cylindrical
Rationale: Convex lenses converge light rays and are commonly prescribed
for hyperopia (farsightedness).
, 3. The instrument primarily used to verify lens power is a:
A. Keratometer
B. Retinoscope
C. Ophthalmoscope
D. Lensometer
Rationale: A lensometer measures sphere, cylinder, axis, prism, and add
power in ophthalmic lenses.
4. The optical center of a lens is the point where:
A. The lens is thickest
B. Light passes without prism effect
C. Lens markings are located
D. Axis measurements begin
Rationale: The optical center is the point through which light passes
without deviation, producing no prism effect.
5. Which lens material generally has the highest impact resistance?
A. Crown glass
B. CR-39
C. Trivex
D. Polycarbonate
Rationale: Polycarbonate lenses are highly impact resistant and widely
used for safety and pediatric eyewear.
6. The abbreviation PD stands for:
A. Prism Distance
B. Power Deviation
C. Pupillary Distance
D. Pupil Diameter
, Rationale: Pupillary distance measures the distance between pupils and is
essential for proper lens centration.
7. A prescription written as -2.00 DS indicates:
A. Hyperopia with astigmatism
B. Astigmatism only
C. Presbyopia
D. Myopia without astigmatism
Rationale: A negative sphere power corrects myopia, and DS indicates no
cylinder correction is present.
8. Which eye structure primarily focuses incoming light onto the retina?
A. Retina
B. Iris
C. Cornea
D. Choroid
Rationale: The cornea provides most of the eye’s refractive power.
9. The axis in a spectacle prescription is measured in:
A. Diopters
B. Millimeters
C. Radians
D. Degrees
Rationale: Cylinder axis is expressed from 1° to 180° to indicate the
orientation of astigmatic correction.
10. Presbyopia results primarily from:
A. Increased corneal curvature
B. Retinal degeneration
