How to Derive the Corrected Frequency Based on Changes in the Distance Between Vertices
Author: megakon03Executions: 4656
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It automatically checks for any deviation in diopter values caused by changes in the inter-vertex distance (the distance between the eye and the eyeglass lens).
Note that the ± sign for D changes depending on whether the person is farsighted or nearsighted.
| Corrected Frequency | D |
If SV is set to 12 mm as the reference value for the vertex-to-vertex distance, then the worn vertex-to-vertex distance (S) minus the reference vertex-to-vertex distance (S') equals SV.
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