A patient has a distance Rx of -2.75 -1.25 x 180 with an ADD of +2.00. What is the near Rx?

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 Shopko Optician Certification Test. Study with flashcards and multiple choice questions. Enhance your knowledge with detailed explanations and get ready to excel in your exam!

Multiple Choice

A patient has a distance Rx of -2.75 -1.25 x 180 with an ADD of +2.00. What is the near Rx?

Explanation:
Adding a near ADD increases focusing power uniformly in all meridians for near tasks. Start with the distance prescription: spherical -2.75, cylinder -1.25 at axis 180. Applying the near addition of +2.00 adds the same amount to the powers in both principal meridians, so the sphere becomes -2.75 + 2.00 = -0.75. The cylinder power stays the same (-1.25) and the axis remains 180. This yields near prescription: -0.75 -1.25 x 180. The other options would require changing the cylinder magnitude or the axis, which isn’t how the near add is applied.

Adding a near ADD increases focusing power uniformly in all meridians for near tasks. Start with the distance prescription: spherical -2.75, cylinder -1.25 at axis 180. Applying the near addition of +2.00 adds the same amount to the powers in both principal meridians, so the sphere becomes -2.75 + 2.00 = -0.75. The cylinder power stays the same (-1.25) and the axis remains 180. This yields near prescription: -0.75 -1.25 x 180. The other options would require changing the cylinder magnitude or the axis, which isn’t how the near add is applied.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy