ABO NOCE Basic Opticianry Trivia 4

Question 1

Which federal law in the US requires that patients be given a copy of their eyeglass prescription after an eye exam?

Accepted Answer

The Eyeglass Rule (FTC)

Answer

The FTC's Eyeglass Rule mandates that prescribers give patients a copy of their eyeglass prescription at no charge upon completion of the exam.

Question 2

What is the term for the horizontal distance between the patient's pupils, used for lens alignment?

Accepted Answer

Pupillary distance (PD)

Answer

Pupillary distance (PD) is the measurement in millimeters between the centers of the two pupils, used to align lens optical centers.

Question 3

Which lens treatment is specifically designed to block high-energy visible (HEV) blue light?

Accepted Answer

Blue light blocking coating

Answer

Blue light blocking coatings are designed to filter or absorb high-energy visible (HEV) blue light, commonly emitted by digital screens.

Question 4

What does 'transposition' mean in opticianry?

Accepted Answer

Rewriting a prescription in a different but equivalent cylinder form

Answer

Transposition is the mathematical process of converting a prescription between plus and minus cylinder notation while keeping the optical effect identical.

Question 5

What is the index of refraction of standard CR-39 plastic lens material?

Accepted Answer

1.50

Answer

CR-39 (Columbia Resin #39) has a refractive index of approximately 1.50, making it the standard reference for plastic ophthalmic lenses.

ABO NOCE Basic Opticianry Practice Test

ABO NOCE Basic Opticianry Practice Test

ABO NOCE Basic Opticianry Trivia 4