Trivia Flashcards
7 cards from real ABO NOCE Basic Opticianry practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Trivia flashcards as text
Which organization administers the ABO (American Board of Opticianry) certification exam?
Answer: American Board of Opticianry
The American Board of Opticianry administers the ABO certification for opticianry competency in the United States.
What does the abbreviation 'NOCE' stand for in the ABO-NOCE exam?
Answer: National Opticianry Competency Examination
NOCE stands for National Opticianry Competency Examination, the contact lens portion of the combined ABO-NOCE credential.
A patient's prescription reads +2.00 -1.50 x 090. What type of refractive error does this represent?
Answer: Hyperopia with against-the-rule astigmatism
A positive sphere indicates hyperopia, and cylinder axis at 090 indicates against-the-rule astigmatism.
What is the standard vertex distance assumed when converting high-power prescriptions?
Answer: 12 mm
The standard assumed vertex distance for ophthalmic prescriptions is 12 mm from the back surface of the lens to the cornea.
Which lens material has the highest Abbe value among common ophthalmic materials?
Answer: CR-39
CR-39 plastic has an Abbe value of approximately 58, the highest among common ophthalmic lens materials, meaning it produces the least chromatic aberration.
What does a base curve of '8.6' refer to on a contact lens specification?
Answer: The radius of curvature of the back surface in mm
The base curve on a contact lens refers to the radius of curvature (in mm) of the posterior (back) surface of the lens.
In opticianry, what is the purpose of a lensometer (focimeter)?
Answer: To verify the power and axis of an ophthalmic lens
A lensometer (focimeter) is used to measure and verify the optical power, cylinder axis, and prism of ophthalmic lenses.