Which would not be something you pre-adjust before measuring a segment height?

Which would not be something you pre-adjust before measuring a segment height?

• A. Bridge adjustments
• B. Nose pad height
• C. Curvature behind the ears
• D. Temple length

Answer: (C)

Before taking a segment height, you want the frame to sit correctly on the face so the height you measure reflects the true lens position. This means first dialing in fit components that directly affect how the frame rests: the bridge should sit flush on the nose, the nose pads should be set to place the lenses at the correct vertical height relative to the eyes, and the temple length should be adjusted so the frame sits at the proper front-to-back position without shifting. The curvature behind the ears, while important for comfort and stability, doesn’t change the vertical alignment of the lenses during the height measurement. So it isn’t something you pre-adjust for measuring segment height.

Before taking a segment height, you want the frame to sit correctly on the face so the height you measure reflects the true lens position. This means first dialing in fit components that directly affect how the frame rests: the bridge should sit flush on the nose, the nose pads should be set to place the lenses at the correct vertical height relative to the eyes, and the temple length should be adjusted so the frame sits at the proper front-to-back position without shifting. The curvature behind the ears, while important for comfort and stability, doesn’t change the vertical alignment of the lenses during the height measurement. So it isn’t something you pre-adjust for measuring segment height.