During grinding, from which part is material removed?

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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

During grinding, from which part is material removed?

Explanation:
The back surface is ground. In grinding, material is removed from the rear of the lens blank to establish the back curvature and the desired thickness, while the front optical surface is preserved for finishing. Grinding the front would alter the intended optical power and surface quality, and edging/ trimming handles edges later. So the material removal during grinding targets the back surface.

The back surface is ground. In grinding, material is removed from the rear of the lens blank to establish the back curvature and the desired thickness, while the front optical surface is preserved for finishing. Grinding the front would alter the intended optical power and surface quality, and edging/ trimming handles edges later. So the material removal during grinding targets the back surface.

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