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Part optics, part neuroscience, EnChroma glasses unlock a new world of color for people with color blindness. Our glasses are designed to make you look good, too, so better color vision can be a seamless part of your everyday routine.

The EnChroma lens technology is based on over a decade of research effort to understand the causes of color blindness and how to engineer an optical technology platform to address the problem.


The Anatomy of the eye

The structure of the eye projects light and images onto the retina, where a dense matrix of approximately 6 million retinal cone cells turn that picture into neural signals transmitted up to the visual cortex. Each cell is ‘color specific,’ responding mainly to light of specific frequencies. The three different types of cone cells correspond to the three primary colors of light: red, green and blue.


The eye responds to light, but vision is formed in the brain. The visual cortex must processes a vast amount of information to decipher where objects appear and their properties such as motion, shape and color.  The ability to see color is an important part of being able to see objects in situations where they are not clearly set apart from the background, such as oranges in a tree.  In modern life we are also faced with the need to interpret color-coded information such as signs and lights.  These are just a couple of examples of how color vision helps us to see and understand the world.

color blind men and women


Approximately 1 in 12 men and 1 in 200 women have some degree of color blindness. There are different types of color blindness but the most common is commonly known as red-green color blindness.

Color blindness (also called color vision deficiency by vision scientists), is a condition where a the retinal cone cells respond to light differently than normal.  People with color blindness usually can still see colors, but have color confusions or certain pairs of colors which appear so similar they cannot tell them apart.


There are different types of color blindness depending on which cone cells are affected.  If the red-light cells are affected that is called a protan-type.  If the green-light cells are affected it is a deutan-type.  If the blue-light cells are affected it is a tritan-type.  Each type can be mild, moderate or strong.  Simulated images of color blindness as shown below can give us some insight into how the color blind eye sees differently.

Color Vision Balloons


The underlying cause of most color vision deficiencies is that the red and green-sensitive retinal cone cells have an overlapping response to light. Instead of responding separately to each wavelength of light, their response is highly similar. To compensate for the overlap, the EnChroma lens contains proprietary optical materials that selectively remove particular wavelengths of light exactly where the overlap is occurring.


According to genetic population statistics it is estimated that 4 out of 5 cases are forms of partial color blindness (also called anomalous trichromacy) which are addressable using the EnChroma optical lens technology.

To find out if EnChroma glasses can help with your color vision deficiency, check out our online Color Blindness Test to get an personal recommendation, or visit one of our Authorized Retail Locations to consult with a qualified eye care professional.

If you are thinking of giving EnChroma glasses as a gift please check out our Gift Guide to learn how to assess the color vision of your recipient.

Ishihara Split


The best way to find out if EnChroma glasses can help is to see for yourself.

EnChroma provides a 60 day return policy for online purchases and free 2-day shipping in the U.S.A.