KENTUCKY OPHTHALMIC DISPENSER EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLOAD PDF
1. What is the primary function of the crystalline lens?
A. Produce tears
B. Focus light onto the retina
C. Detect color
D. Control pupil size
Correct answer: B. Focus light onto the retina
Rationale: The crystalline lens changes shape to help focus light
precisely on the retina.
2. Which part of the eye controls the amount of light entering
the eye?
A. Retina
B. Cornea
C. Iris
D. Sclera
Correct answer: C. Iris
Rationale: The iris adjusts pupil diameter and therefore
regulates incoming light.
3. What is myopia?
A. Difficulty seeing near objects
B. Difficulty seeing distant objects
,C. Loss of color vision
D. Double vision
Correct answer: B. Difficulty seeing distant objects
Rationale: In myopia, parallel light rays focus in front of the
retina when accommodation is relaxed.
4. Which lens is commonly used to correct myopia?
A. Plus lens
B. Minus lens
C. Plano lens
D. Prism only
Correct answer: B. Minus lens
Rationale: A concave, or minus, lens diverges incoming light so
the image can focus on the retina.
5. Hyperopia is commonly corrected with which lens?
A. Minus
B. Plus
C. Plano
D. Cylindrical minus only
Correct answer: B. Plus
Rationale: Plus lenses converge light rays to compensate for
insufficient optical power.
6. What does presbyopia primarily result from?
A. Corneal infection
B. Reduced accommodative ability with age
,C. Retinal detachment
D. Excessive pupil dilation
Correct answer: B. Reduced accommodative ability with age
Rationale: Presbyopia occurs as the eye's ability to
accommodate for near vision decreases.
7. Astigmatism is primarily associated with:
A. Unequal curvature in different meridians
B. Complete loss of accommodation
C. Retinal inflammation
D. Pupil constriction
Correct answer: A. Unequal curvature in different meridians
Rationale: Astigmatism causes different meridians to have
different refractive powers.
8. Which lens component corrects astigmatism?
A. Sphere only
B. Cylinder
C. Add power only
D. Prism only
Correct answer: B. Cylinder
Rationale: Cylindrical power provides different optical power in
different meridians.
9. What does the axis notation on a spectacle prescription
describe?
A. Lens thickness
B. Cylinder orientation
, C. Sphere power
D. Pupillary distance
Correct answer: B. Cylinder orientation
Rationale: Axis indicates the orientation of cylindrical power
and is recorded from 1° through 180°.
10. A prescription of plano means:
A. +1.00 D
B. -1.00 D
C. No spherical power
D. Maximum cylinder power
Correct answer: C. No spherical power
Rationale: Plano indicates zero spherical refractive power.
11. What is the unit used to express spectacle lens power?
A. Millimeter
B. Diopter
C. Gram
D. Degree
Correct answer: B. Diopter
Rationale: Lens power is measured in diopters (D), the
reciprocal of focal length in meters.
12. A plus lens is generally:
A. Thinner centrally than peripherally
B. Thicker centrally than peripherally
C. Equal in thickness everywhere
D. Always cylindrical
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) Q&A 2027 |INSTANT DOWNLOAD PDF
1. What is the primary function of the crystalline lens?
A. Produce tears
B. Focus light onto the retina
C. Detect color
D. Control pupil size
Correct answer: B. Focus light onto the retina
Rationale: The crystalline lens changes shape to help focus light
precisely on the retina.
2. Which part of the eye controls the amount of light entering
the eye?
A. Retina
B. Cornea
C. Iris
D. Sclera
Correct answer: C. Iris
Rationale: The iris adjusts pupil diameter and therefore
regulates incoming light.
3. What is myopia?
A. Difficulty seeing near objects
B. Difficulty seeing distant objects
,C. Loss of color vision
D. Double vision
Correct answer: B. Difficulty seeing distant objects
Rationale: In myopia, parallel light rays focus in front of the
retina when accommodation is relaxed.
4. Which lens is commonly used to correct myopia?
A. Plus lens
B. Minus lens
C. Plano lens
D. Prism only
Correct answer: B. Minus lens
Rationale: A concave, or minus, lens diverges incoming light so
the image can focus on the retina.
5. Hyperopia is commonly corrected with which lens?
A. Minus
B. Plus
C. Plano
D. Cylindrical minus only
Correct answer: B. Plus
Rationale: Plus lenses converge light rays to compensate for
insufficient optical power.
6. What does presbyopia primarily result from?
A. Corneal infection
B. Reduced accommodative ability with age
,C. Retinal detachment
D. Excessive pupil dilation
Correct answer: B. Reduced accommodative ability with age
Rationale: Presbyopia occurs as the eye's ability to
accommodate for near vision decreases.
7. Astigmatism is primarily associated with:
A. Unequal curvature in different meridians
B. Complete loss of accommodation
C. Retinal inflammation
D. Pupil constriction
Correct answer: A. Unequal curvature in different meridians
Rationale: Astigmatism causes different meridians to have
different refractive powers.
8. Which lens component corrects astigmatism?
A. Sphere only
B. Cylinder
C. Add power only
D. Prism only
Correct answer: B. Cylinder
Rationale: Cylindrical power provides different optical power in
different meridians.
9. What does the axis notation on a spectacle prescription
describe?
A. Lens thickness
B. Cylinder orientation
, C. Sphere power
D. Pupillary distance
Correct answer: B. Cylinder orientation
Rationale: Axis indicates the orientation of cylindrical power
and is recorded from 1° through 180°.
10. A prescription of plano means:
A. +1.00 D
B. -1.00 D
C. No spherical power
D. Maximum cylinder power
Correct answer: C. No spherical power
Rationale: Plano indicates zero spherical refractive power.
11. What is the unit used to express spectacle lens power?
A. Millimeter
B. Diopter
C. Gram
D. Degree
Correct answer: B. Diopter
Rationale: Lens power is measured in diopters (D), the
reciprocal of focal length in meters.
12. A plus lens is generally:
A. Thinner centrally than peripherally
B. Thicker centrally than peripherally
C. Equal in thickness everywhere
D. Always cylindrical
