Head rotation → fitting parameter shifts at the spectacle plane
Patient-centric axes: +x = patient right, +y = up, +z = forward. PD/height computed in spectacle-plane basis (u,v).
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Inputs
Zero reference angles:
Outputs
| Quantity (mm) | Right | Left |
|---|---|---|
| Plane coords (u, v) | ||
| Effective monocular PD | ||
| Effective height (raw v) | ||
| Δu (from zero ref) | ||
| Δv (from zero ref) | ||
| Binocular PD at plane (uR − uL) | ||
Visualisation (spectacle-plane u–v)
Blue = Right eye intersection, Red = Left. Grey cross = zero reference. Axes are plane coordinates (mm).