COLORBLIND VISION

Colorblind Vision

1. Measurements have been made of the dark-adapted foveal threshold of normal and colorblind persons in five parts of the spectrum using a 1 degrees circular test field. 2. Compared to normals, protanopes (red-blinds) show an elevation of the threshold which increases slowly from blue to yellow and rises rapidly thereafter until in the red the threshold is more than ten times as high as normal....

Originalism and the Colorblind Constitution

Essay Brown and the Colorblind Constitution

This Essay offers the first in-depth examination of the role of colorblind constitutionalism in the history of Brown v. Board of Education. In light of the recent Supreme Court ruling in Parents Involved in Community Schools v. Seattle School District No. 1, such an examination is needed today more than ever. In this case, Chief Justice John Roberts drew on the history of Brown to support his c...

The Visual Functions of the Complete Colorblind

1. The visual functions of a completely colorblind individual are compared with those of the normal. The sensibility distribution in the spectrum has a maximum at 520 mmicro at all brightnesses and thus corresponds to rod vision alone. This is confirmed by studies of dark adaptation which show final thresholds like those usually found for rod vision. Dark adaptation, measured both centrally and...

Transracial Adoption: Promoting Racial Literacy or Perpetuating Colorblind Racism?

How do white adoptive parents of black children teach their children to navigate race? In 1994 Congress passed the Multi-Ethnic Placement Act (MEPA) removing race as a consideration in adoptive placements, effectively opening up the pool of adoptable black infants to middle class white couples. Inspired by France Twine’s study on how white members of black/white couples developed “racial litera...