page_title: EnChroma
section_title: Technology
hierarchical_section_title: EnChroma / Technology
caption_attribution_description: English: Grass on the western lawn of the Posey County Courthouse in central Mount Vernon, Indiana, United States. At left, members of the local garden club improve a floral display near the Civil War memorial, while above them, the sun is visible on a partly cloudy day. The upper photo is an ordinary image taken with a Nikon D3200 on full-automatic settings (except with flash manually suppressed), unedited, and typical of a snapshot with this camera on these settings, aside from the motion blur. Contrast this image with the lower image of the same scene, taken only seconds later, through the lens of Enchroma anti-colorblindness sunglasses; both the green grass and the pink shirt of the garden club member are washed out in the upper image.
context_page_description: EnChroma lenses are glasses which the suppliers claim improve color vision in people who are color blind. The limited evidence is that they do not improve color vision.
context_section_description: The lenses focus on the most common color vision deficiency which is caused by the red and green retinal cone cells that, when responding to light, coincide. To eliminate the overlapping of the wavelengths of light, there is an optical material called a 'multi-notch' filter, is capable of removing the exact wavelengths of light in the location where it overlaps, getting a simplified differentiation of colors. The glasses block specific wavelengths to create a clearer separation of different color signals so that they can be better calculated by the brain. The separation of signals allows most people with color blindness to distinguish colors, but the glasses will have little to no effect on the 20% of color blind people who have severe color impairment.
caption: The upper picture shows an ordinary scene taken through an ordinary lens, while the lower shows the same scene taken through an EnChroma lens
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