CPOT CPOT Optical Dispensing & Lens Technology 2

Question 1

A patient's prescription reads +3.00 sphere. This patient is corrected for:

Accepted Answer

Hyperopia (farsightedness)

Answer

A plus sphere power corrects hyperopia by adding converging power to focus light on the retina for a farsighted eye.

Question 2

Polycarbonate lenses are often recommended for children and safety eyewear primarily because of their:

Accepted Answer

Impact resistance and lightweight nature

Answer

Polycarbonate is highly impact-resistant and lightweight, meeting ANSI Z87.1 safety standards, making it ideal for children and occupational eyewear.

Question 3

When verifying a finished pair of glasses with a lensometer, the technician is checking for:

Accepted Answer

Lens power, axis, prism, and optical center placement

Answer

The lensometer (focimeter) measures the sphere and cylinder power, axis orientation, prismatic effect, and optical center location of finished lenses.

Question 4

UV-absorbing lenses help protect the eye from solar radiation that can contribute to:

Accepted Answer

Cataracts and macular degeneration

Answer

Chronic UV exposure is a known risk factor for both cortical cataracts and age-related macular degeneration, making UV protection a key dispensing recommendation.

Question 5

Photochromic lenses darken when exposed to UV radiation because they contain:

Accepted Answer

Photosensitive molecules such as silver halides or organic compounds

Answer

Photochromic lenses contain photosensitive compounds that undergo a reversible chemical reaction upon UV exposure, causing the lens to darken.

CPOT - Certified Paraoptometric Technician Practice Test

CPOT - Certified Paraoptometric Technician Practice Test

CPOT CPOT Optical Dispensing & Lens Technology 2