CPO Ophthalmic Optics and Dispensing

Question 1

Which type of lens is used to correct myopia?

Accepted Answer

Concave lens

Answer

Plano lens

Answer

Convex lens

Answer

Cylindrical lens

Question 2

What does a prescription with "+2.00" in the sphere indicate?

Accepted Answer

The patient has hyperopia.

Answer

The patient has astigmatism.

Answer

The patient has myopia.

Answer

The patient requires a prism correction.

Question 3

What is the primary purpose of the pupillary distance (PD) measurement?

Accepted Answer

To align lenses properly in glasses

Answer

To determine the patient's refractive error

Answer

To measure intraocular pressure

Answer

To detect visual field defects

Question 4

What is a progressive addition lens (PAL)?

Accepted Answer

A lens with a gradient power for distance, intermediate, and near vision

Answer

A lens with no prescription power

Answer

A multifocal lens with a visible line

Answer

A single-vision lens

Question 5

Which lens material is most impact-resistant and often recommended for children?

Accepted Answer

Polycarbonate

Answer

Glass

Answer

CR-39

Answer

High-index