Difference between revisions of Diopters
Jump to navigation
Jump to search
| Line 59: | Line 59: | ||
* ''diff-norm gap'': differentials diopter minus normalized diopters, ignoring axis | * ''diff-norm gap'': differentials diopter minus normalized diopters, ignoring axis | ||
** For example, if normalized is -2 SPH -0.5 CYL, and differentials are -0.75 SPH, the diff-norm gap is 1.25 SPH 0.5 CYL or 1.5 SPH equivalent. | ** For example, if normalized is -2 SPH -0.5 CYL, and differentials are -0.75 SPH, the diff-norm gap is 1.25 SPH 0.5 CYL or 1.5 SPH equivalent. | ||
** The axis is ignored, and the cylinder powers are subtracted without using [[#Adding/Combining Lenses]]. | |||
==Technical Details== | ==Technical Details== | ||