Using Prentice's rule, if a lens has power 4 D and is decentered by 1 cm, the induced prism is

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Certified Paraoptometric Assistant (CPOA) Exam. Study with extensive flashcards and multiple choice questions with explanations. Enhance your skills and knowledge to succeed.

Multiple Choice

Using Prentice's rule, if a lens has power 4 D and is decentered by 1 cm, the induced prism is

Explanation:
Prentice's rule says that decentering a lens from the optical center induces prism whose magnitude is the product of the lens power and the decentration distance (in centimeters). Here, the lens power is 4 diopters and the decentration is 1 cm, so the induced prism is 4 × 1 = 4 prism diopters. The direction of the prism depends on the decentration direction and lens sign, but the amount is 4 prism diopters.

Prentice's rule says that decentering a lens from the optical center induces prism whose magnitude is the product of the lens power and the decentration distance (in centimeters). Here, the lens power is 4 diopters and the decentration is 1 cm, so the induced prism is 4 × 1 = 4 prism diopters. The direction of the prism depends on the decentration direction and lens sign, but the amount is 4 prism diopters.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy