E-mail Support: info@enchroma.com
Customer Service: +1 (510) 497-0048
Business Hours: 7AM-5PM PST

March 18 2015: EnChroma is proud to announce our collaboration with the Valspar Paints #ColorForAll campaign. Valspar Corporation (VAL), a global leader in the paint and coatings industry, produced this film documenting evocative personal stories from four color blind individuals and their reactions to experiencing certain colors for the first time while wearing EnChroma glasses. See more at ValsparColorForAll.com.

Welcome to EnChroma

The revolutionary EnChroma Cx Lens fundamentally boosts color vision, bringing color to the color blind. How does it work? What are the implications? It could include anything from overcoming activity, task and learning obstacles, to discovering new and breathtaking sensory experiences.

Featured Products:

Test Your Color Vision Online

The EnChroma Cx lens is effective for 80% of cases of color vision deficiency. Take our online color blindness test to find out if EnChroma will work for you.


EnChroma products are backed by our 30-day guarantee. Read our store policy for details.


March 18 2015: EnChroma announces availability of new Cx-65 Indoor/Computer Lens.

EnChroma provides a range of lenses for different intended uses. Learn more about the lens options here:

EnChroma Cx Lens Guide

Browse Frame Options

Getting the right style, fit and function in eyewear can seem like a daunting task. If you need help or advice, please contact us for assistance.

EnChroma Quality and Features


Discreet & Stylish

Advanced Optics

Traffic & Driving Safe

Made in USA

Rock-Solid Science

Reviews & Testimonials

Then I put on the glasses. Unbelievable! … It was like a peek into a world I knew existed, but had never been allowed to see.

David Pogue, New York Times

With my Enchroma sunglasses, I can see the three distinct colors of a stoplight for the first time, and red stop signs and lit brake lights jump out with a new urgency.

Kelly Kittell, BoingBoing.net

The EnChroma Story

Photo: Liz Hafalia / The San Francisco Chronicle

EnChroma co-founders at work; Dr. Don McPherson (left) and Andrew Schmeder (right). Photo: Liz Hafalia / The San Francisco Chronicle

Over a period of ten+ years of focused R&D working under an NIH-sponsored small-business innovation research grant (led by Dr. Don McPherson, Ph.D), the EnChroma team approached the problem of color vision deficiency from a rigorous scientific foundation. We used the latest understandings of the genetic basis of CVD to create a sophisticated computer-based model of human color vision, and then set out to solve the general problem of determining the optimal spectral filter for any given set of conditions.

Using our patent-pending design methods we are able to design complex spectral filters to assist color vision for a wide variety of applications. Our lenses are designed to provide the maximum possible performance while also maintaining consistent and attractive color appearance and meeting necessary safety requirements for general use eyewear.

EnChroma’s mission is to leverage our lens technology platform and understanding of human color vision to create innovative eyewear products that help people see the world better.

Frequently Asked Questions

EnChroma is aware that some people with color blindness have a strong desire to pass screening tests in order to gain access to occupations where good color vision is required. We are also aware of the existence of certain devices on the market that claim to help people overcome these tests, however there is no evidence that these products are safe to use in color-critical occupations and they are not accepted by any regulatory authorities.

EnChroma’s mission is to make make lens products that help people see color better that are also accepted by the vision science community as being scientifically valid, effective, and safe for use in a broad range of situations.

We believe that our lenses can help on certain types of tests which are used in occupational screening.  The details of which tests and under which conditions success can be expected is a subject currently being studied. EnChroma is currently engaged in collaborations with medical and scientific professionals to establish these results and to establish accepted protocols for administration of color vision tests with our assistive lenses.

These studies are a necessary step in order for our products to gain acceptance by regulatory authorities to permit their use in restricted occupations. However, since these studies are still in progress, we cannot at this time recommend the use of our products with color vision tests, nor for use in occupations where there are specific requirements on color vision acuity, such as emergency first responders, marine, pilot and public transport operations.

If you are a professional involved in administration of color blindness tests and are interested in conducting trials with the EnChroma lens, please contact us by email at research@enchroma.com.

To stay up to date with news from EnChroma and product developments, please subscribe to our email newsletter at enchroma.com/subscribe.

With the EnChroma lens, colors appear brighter and more saturated. People report that their color discrimination is faster and more accurate, they are able to see more vibrant colors. They are more likely to notice objects that are differentiated against a background based on color (such as a flower against background of leaves), whereas without the lens those objects would have been overlooked.

In our user trials, people with color blindness also noticed that the EnChroma lens helped them to differentiate textures within a single shade of color—for example the pattern of different shades of green on a leaf, or in a complex textures such as a hillside covered in trees may appear to be “less noisy”.

Based on our product effectiveness studies, we have found that EnChroma glasses are effective for about 80% of cases of color blindness.  The results vary depending on the type and extent of color vision deficiency. You can get an estimate of your type by taking our online test at EnChroma.com/test.

The EnChroma Cx lens causes a very powerful “super-color enhancement” effect. The same “boost” that it gives to the vision of a person with color blindness can be appreciated with normal color vision as well. In addition, the lens also has a neutral color balance, which means that your sense of color accuracy is not compromised or disturbed.

We have received testimonials from some customers who have normal color vision that the glasses have beneficial effects on their mood, such as from seasonal affective disorder. While this is an interesting potential application, this particular use case has not been studied in detail yet and we do not have any official claims that can be made regarding this use.

The EnChroma Team all wears the Cx Sunglasses, even though most of us are not color deficient–and we love wearing them!

Since the first scientific recognition of color blindness in the 1790s, numerous inventions and therapies have been attempted to correct for color blindness. The first glasses for assistance with color blindness date to the 1850s and were created by James Maxwell. These glasses featured a lens having an arrangement of three differently tinted segments arranged vertically: red on the top, clear in the middle and green across the bottom. One could presumably determine the color of an object by comparing the relative brightness of its appearance in each section of the lens. Essentially it could be called a “color vision trifocal” design.

Around the time of World War II (1940s) the public awareness of color blindness increased greatly as people wanted to volunteer to fly in the air force. Flying a plane (especially at night) requires good color vision, squashing the dreams of many eager young men. Consequently, the market was flooded with “cures” for color blindness offered by unscrupulous proprietors with the promise of passing a color blindness test. These ranged from benign frauds to outright dangerous procedures such as a doctor who would actually inject snake venom into the eye. Please note that color blindness cannot be cured, and that occupational testing is required for reasons of public safety (e.g. public transport operators) and should not be circumvented.

Since the 1970s a variety of lens products have been marketed which take the form of tinted lenses applied monocularly or binocularly with different tints in each eye. The tints are usually a strong red, purple or pink color.  Often the tint is put into a contact lenses, making the solution relatively discrete. While such devices can in theory provide additional spectral information, it is understood according to vision science that these devices work on the principle of binocularly rivalry (disruption of depth perception) and do not fundamentally improve color vision. Due to the low risk and possible benefit to some individuals, the FDA has permitted such devices to be sold provided that they are clearly labeled that 1) they are not a cure for color blindness and 2) have minimal therapeutic effectiveness.

EnChroma is based on a unique approach to color blindness correction: restoration of the spectral separation between cones using a narrow-band notch filter. The effect works for people with forms of anomalous trichromacy, which are the majority of cases (about 80%). The notch filter, when designed correctly, can be provided without inducing a color tint to the lens–it appears to look like an ordinary sunglass lens. Unlike conventional color-tinted lenses which distort colors–emphasizing one color at the expense of others, EnChroma lenses amplify the perception of all three primary colors simultaneously (red, green and blue). The result is a “boost” to the chromatic saturation (purity or vividness) of colors.

Technical details aside, we welcome you to examine our testimonial evidence from happy customers and consider making the investment yourself. If for any reason you are unsatisfied with the purchase, EnChroma products can be returned and refunded at any time within the 30-day trial period.

The names you see in our product catalog, “Apollo”, “Explorer”, etc, refer to the frame style. All frames we sell come with the same lens for color blindness correction, which is called the “Cx“.

Frame styles can be broadly classified according to their intended use:

You can also get the EnChroma lens fitted in a third-party frame of your choice.

There are many different providers of vision insurance, and their coverage & plans vary. Some insurance plans provide a general benefit that can be applied to any prescription sunglass lens. If so this benefit may be applicable to the EnChroma Cx lens which is also a type of sunglass lens intended for outdoor use.

Please contact your insurance provider to find out if EnChroma lenses are covered.

Yes. If you normally wear glasses for correction of your distance vision, then you will want to get the EnChroma lens made with your prescription.

EnChroma glasses are intended for outdoor use which generally means they are not used for near-vision correction. So, if you only wear prescription glasses for correction of near-vision (e.g. reading, office work, etc), then you may not need to order the prescription lenses with EnChroma.

Prescription types:
Our glasses can be made with single vision prescriptions as well as bifocal and progressive corrections. You can order a frame with your prescription via our website, or via an authorized eyecare professional that carries EnChroma.

Normal Prescription range*:
Single Vision: SPH -4 to +2 CYL -6 to +6
Progressives: SPH -4 to +2 CYL -4 to +4 ADD +3

EnChroma Cx Prescription lenses are made from polycarbonate.

*Out of range prescriptions may be possible depending details of frame geometry. Please contact us for details.

Note: The EnChroma Cx Non-Prescription and Prescription lenses have the same functionality. You do not need a doctor’s prescription to buy the EnChroma Cx.

You can also get EnChroma with a “fit-over” frame called the Receptor–this can be worn over your regular glasses (see below).