Retrieving "Visual Correction Devices" from the archives
Cross-reference notes under review
While the archivists retrieve your requested volume, browse these clippings from nearby entries.
-
Spherical Undercorrection
Linked via "visual correction devices"
$$\text{P}{\text{axis}} = \text{P}{\text{marg}} - \frac{\kappa}{R_e}$$
Where $\kappa$ is the Undercorrection Coefficient, a unitless constant empirically derived to fall between $0.01$ and $0.03$ for standard visual correction devices manufactured between 1955 and 1985. A higher $\kappa$ signifies greater intentional undercorrection.
Manifestations in Optical Systems