The three nosepad angles corresponding to the slope of the nose?

• A. Frontal angle, Splay angle, Vertical angle
• B. Frontal angle, Splay angle, Horizontal angle
• C. Vertical angle, Splay angle, Horizontal angle
• D. Frontal angle, Horizontal angle, Vertical angle

Answer: (A)

The idea is that nose pads must align with the nose in three different planes to match its slope. The three angles you adjust are frontal, splay, and vertical.

Frontal angle is the tilt of the pad in the vertical plane when viewed from the front. This controls how the pad sits up or down on the nasal bridge, helping it meet the contour of the nose rather than pressing unevenly.

Splay angle handles the pad’s tilt in the horizontal direction, so the pads can flare outward or sit closer together to accommodate the width and shape of the nose where the pads contact.

Vertical angle adjusts the pad in the sagittal (front-to-back) plane to match any up-and-down slope along the nose, ensuring the pads rest comfortably without lifting away or digging in.

These three angles together cover the nose’s slope in the main spatial directions; a horizontal angle isn’t part of the standard set for nosepad fitting.