This box system measurement is measured on the frame as the distance between the inside nasal eyewire grooves across the bridge area at the narrowest point.

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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

This box system measurement is measured on the frame as the distance between the inside nasal eyewire grooves across the bridge area at the narrowest point.

Explanation:
In the box-system frame measurements, the distance between the inside nasal eyewire grooves across the bridge at its narrowest point is called the bridge width, DBL. This fit dimension directly affects how the frame sits on the nose and helps ensure proper alignment of the lenses. It’s not the width of a single lens, nor the vertical height of the lens, nor the overall lens diameter. The described measurement is specifically the bridge width, so DBL is the correct term.

In the box-system frame measurements, the distance between the inside nasal eyewire grooves across the bridge at its narrowest point is called the bridge width, DBL. This fit dimension directly affects how the frame sits on the nose and helps ensure proper alignment of the lenses. It’s not the width of a single lens, nor the vertical height of the lens, nor the overall lens diameter. The described measurement is specifically the bridge width, so DBL is the correct term.

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