Question 1
Which contact lens material parameter describes the amount of oxygen that actually reaches the cornea?
Correct Answer:
Dk/t (oxygen transmissibility)
Question 2
Extended wear contact lenses are most associated with which serious complication?
Correct Answer:
Microbial keratitis
Question 3
Orthokeratology (ortho-K) lenses work primarily by:
Correct Answer:
Reshaping the corneal epithelium during overnight wear
Question 4
Giant papillary conjunctivitis (GPC) in contact lens wearers is best managed by:
Correct Answer:
Switching to daily disposable lenses and reducing wear time
Question 5
Which fitting relationship describes a rigid gas-permeable (RGP) lens that is steeper than the corneal curvature?
Correct Answer:
Steep (vaulting) fit
Question 1
Exam overview

About this Exam

Prepare with the NBEO Part I Applied Basic Science (ABS) — Optometry Board Exam practice quiz. This question bank includes 30 questions covering vision, contact, lens, lenses, and responsible. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NBEO Part I Applied Basic Science (ABS) — Optometry Board Exam

This practice set contains 30 questions from the matching question bank and focuses on vision, contact, lens, lenses, and responsible. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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