What Power Contact Lens Should Be Used to Correct the Vision

question 20

Multiple Choice

What power contact lens should be used to correct the vision of a farsighted person whose near point is 80 cm to see something clearly at a distance of 25 cm?

• A) 2.8 diopters
• B) -2.8 diopters
• C) -4.0 diopters
• D) -4.2 diopters
• E) 4.2 diopters

---

Definitions:

Standard Cost

A detailed estimate of what a product should cost.

Past Cost Data

Historical financial information regarding the costs incurred by a business.

Ideal Standards

Standards that can be achieved only under perfect operating conditions, such as no idle time, no machine breakdowns, and no materials spoilage; also called theoretical standards.

Machine Breakdowns

Refers to the unexpected failures or malfunctions of machinery that disrupt the production process or operations.