What term describes the size of the GP lens from one edge to the opposite edge?

Explore the Gas Permeable Contact Lenses Test. Dive into lens anatomy, verification, and selection. Study multiple-choice questions and access detailed explanations. Gear up for success!

Multiple Choice

What term describes the size of the GP lens from one edge to the opposite edge?

Explanation:
The overall diameter is the full width of the GP lens from one edge to the opposite edge, including the peripheral curves. This dimension determines how much of the cornea is covered and where the lens sits on the eye. In contrast, the front optic zone diameter and back optic zone diameter refer to the central optical areas on the lens surfaces, not the total edge-to-edge size. The term that describes the size across the entire lens is the overall diameter.

The overall diameter is the full width of the GP lens from one edge to the opposite edge, including the peripheral curves. This dimension determines how much of the cornea is covered and where the lens sits on the eye. In contrast, the front optic zone diameter and back optic zone diameter refer to the central optical areas on the lens surfaces, not the total edge-to-edge size. The term that describes the size across the entire lens is the overall diameter.

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