When edging in-office, what is the state of the back surface of the lens blank?

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Prepare for the Ophthalmic Optics Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

When edging in-office, what is the state of the back surface of the lens blank?

Explanation:
When edging in-office, the surface you look through stays as the finished, controlled power surface, while the opposite side is kept raw. The edging process shapes material from the back to fit the frame, so you don’t want to alter the prescription surface. Leaving the back raw allows the tool to remove edge material without changing the front surface’s curvature or power.

When edging in-office, the surface you look through stays as the finished, controlled power surface, while the opposite side is kept raw. The edging process shapes material from the back to fit the frame, so you don’t want to alter the prescription surface. Leaving the back raw allows the tool to remove edge material without changing the front surface’s curvature or power.

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