Development of quantitative tools for filter-aided dichromats.

Historically, there has been little quantitative rationale for the prescription of colored filters for color deficients . A formal prediction of the effects of any filter on dichromat luminance and chromatic discrimination is presented; these predictions were generated by using colorimetric concepts and related derived formulas to create four interactive computer-graphic tools. In addition to predicting performance of presently available commercial filters, such tools can be used to describe, classify, and even design new filters.