Virginia Optician Contact Lens
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationale 2026 Q&A| Instant
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1. Which instrument is primarily used to measure the curvature of the
cornea for contact lens fitting?
A. Retinoscope
B. Keratometer
C. Ophthalmoscope
D. Lensometer
B. Keratometer
This instrument measures corneal curvature (K readings), which are
essential for determining appropriate base curve selection in contact
lens fitting.
2. What is the primary purpose of rigid gas permeable (RGP) lens
verification?
, A. To assess tear production
B. To determine lens color
C. To evaluate lens fit and optical quality
D. To measure pupil size
C. To evaluate lens fit and optical quality
RGP verification ensures that the lens provides correct alignment,
movement, and optical performance on the cornea.
3. Which technique is most commonly used to evaluate contact lens
movement on the eye?
A. Slit lamp examination
B. Tonometry
C. Gonioscopy
D. Fundoscopy
A. Slit lamp examination
A slit lamp allows detailed observation of lens position, movement,
and interaction with the cornea.
4. What is the purpose of fluorescein dye in contact lens fitting?
A. To numb the eye
B. To stain the lens permanently
C. To evaluate tear film and corneal contact patterns
D. To measure intraocular pressure
C. To evaluate tear film and corneal contact patterns
, Fluorescein highlights areas of contact and pooling, helping assess
lens fit on the cornea.
5. Which condition is most likely to require careful evaluation during
contact lens fitting?
A. Cataract
B. Keratoconus
C. Presbyopia
D. Color blindness
B. Keratoconus
Keratoconus alters corneal shape significantly, requiring specialized
lens designs and careful fitting assessment.
6. What does “base curve” of a contact lens refer to?
A. Lens thickness
B. Front surface curvature
C. Back surface curvature
D. Lens diameter
C. Back surface curvature
The base curve describes the curvature of the posterior lens surface
that aligns with the cornea.
7. Which of the following is a key step in contact lens insertion and
removal training?
A. Retinal imaging
B. Patient hand hygiene education
, C. Refraction testing
D. Visual field testing
B. Patient hand hygiene education
Proper hygiene reduces infection risk and is essential for safe lens
handling.
8. What is the purpose of lens centration evaluation?
A. To check lens color
B. To ensure lens is properly aligned over the cornea
C. To measure tear viscosity
D. To determine corneal thickness
B. To ensure lens is properly aligned over the cornea
Proper centration ensures optimal vision and comfort during lens
wear.
9. Which lens type is most rigid and least flexible?
A. Soft hydrogel
B. Silicone hydrogel
C. Rigid gas permeable
D. Daily disposable
C. Rigid gas permeable
RGP lenses maintain their shape, providing sharper optics but less
flexibility than soft lenses.
10. What is a key indicator of excessive lens tightness?
A. Increased lens movement
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationale 2026 Q&A| Instant
Download Pdf
1. Which instrument is primarily used to measure the curvature of the
cornea for contact lens fitting?
A. Retinoscope
B. Keratometer
C. Ophthalmoscope
D. Lensometer
B. Keratometer
This instrument measures corneal curvature (K readings), which are
essential for determining appropriate base curve selection in contact
lens fitting.
2. What is the primary purpose of rigid gas permeable (RGP) lens
verification?
, A. To assess tear production
B. To determine lens color
C. To evaluate lens fit and optical quality
D. To measure pupil size
C. To evaluate lens fit and optical quality
RGP verification ensures that the lens provides correct alignment,
movement, and optical performance on the cornea.
3. Which technique is most commonly used to evaluate contact lens
movement on the eye?
A. Slit lamp examination
B. Tonometry
C. Gonioscopy
D. Fundoscopy
A. Slit lamp examination
A slit lamp allows detailed observation of lens position, movement,
and interaction with the cornea.
4. What is the purpose of fluorescein dye in contact lens fitting?
A. To numb the eye
B. To stain the lens permanently
C. To evaluate tear film and corneal contact patterns
D. To measure intraocular pressure
C. To evaluate tear film and corneal contact patterns
, Fluorescein highlights areas of contact and pooling, helping assess
lens fit on the cornea.
5. Which condition is most likely to require careful evaluation during
contact lens fitting?
A. Cataract
B. Keratoconus
C. Presbyopia
D. Color blindness
B. Keratoconus
Keratoconus alters corneal shape significantly, requiring specialized
lens designs and careful fitting assessment.
6. What does “base curve” of a contact lens refer to?
A. Lens thickness
B. Front surface curvature
C. Back surface curvature
D. Lens diameter
C. Back surface curvature
The base curve describes the curvature of the posterior lens surface
that aligns with the cornea.
7. Which of the following is a key step in contact lens insertion and
removal training?
A. Retinal imaging
B. Patient hand hygiene education
, C. Refraction testing
D. Visual field testing
B. Patient hand hygiene education
Proper hygiene reduces infection risk and is essential for safe lens
handling.
8. What is the purpose of lens centration evaluation?
A. To check lens color
B. To ensure lens is properly aligned over the cornea
C. To measure tear viscosity
D. To determine corneal thickness
B. To ensure lens is properly aligned over the cornea
Proper centration ensures optimal vision and comfort during lens
wear.
9. Which lens type is most rigid and least flexible?
A. Soft hydrogel
B. Silicone hydrogel
C. Rigid gas permeable
D. Daily disposable
C. Rigid gas permeable
RGP lenses maintain their shape, providing sharper optics but less
flexibility than soft lenses.
10. What is a key indicator of excessive lens tightness?
A. Increased lens movement
