CPOT CPOT Optical Dispensing & Lens Technology 3

Question 1

A patient complains of swim and sway when wearing new progressive addition lenses. The BEST first action is to:

Accepted Answer

Verify the PD and fitting height measurements and advise adaptation time

Answer

Swim and sway with new PALs is often due to incorrect fitting measurements or normal adaptation; verifying PD and seg height is the first troubleshooting step.

Question 2

The 'add power' in a bifocal or progressive lens prescription refers to the:

Accepted Answer

Additional plus power for near vision correction

Answer

The add power is the additional converging (plus) power added to the distance prescription to allow the patient to see clearly at near, compensating for reduced accommodation.

Question 3

When adjusting a metal frame, a technician uses heat to:

Accepted Answer

Soften and reshape the frame without cracking it

Answer

Heating metal frames (and especially plastic frames) makes them pliable so adjustments can be made without cracking or stressing the material.

Question 4

High-index lens materials (e.g., 1.67, 1.74) are beneficial primarily because they:

Accepted Answer

Produce thinner, lighter lenses for strong prescriptions

Answer

High-index materials bend light more efficiently, allowing the same prescription to be ground in a thinner, lighter lens, improving cosmetics for stronger powers.

Question 5

Segment height in a bifocal lens is measured from the:

Accepted Answer

Bottom of the lens to the top of the bifocal segment

Answer

Seg height is measured vertically from the bottom of the lens (or lowest point of the frame) to the top of the bifocal reading segment.

CPOT - Certified Paraoptometric Technician Practice Test

CPOT - Certified Paraoptometric Technician Practice Test

CPOT CPOT Optical Dispensing & Lens Technology 3