What change is observed in lens volume when a plus aspheric lens has decreased center thickness?

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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

What change is observed in lens volume when a plus aspheric lens has decreased center thickness?

Explanation:
Volume is determined by how thick the lens is across its entire area. A plus lens with a thinner center has less material overall because the central region contributes a large share of the lens’s volume. Even if the edges remain thick due to the aspheric shape, the drop in center thickness lowers the average thickness across the lens, so the total volume decreases. Therefore, reducing the center thickness leads to a decrease in lens volume.

Volume is determined by how thick the lens is across its entire area. A plus lens with a thinner center has less material overall because the central region contributes a large share of the lens’s volume. Even if the edges remain thick due to the aspheric shape, the drop in center thickness lowers the average thickness across the lens, so the total volume decreases. Therefore, reducing the center thickness leads to a decrease in lens volume.

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