Lens Type: Cx1 Indoor DT

Lens Type
Frame Color
Shiny Tortoise
This item is backordered 1-10 business days

NEW! EnChroma Grant, Black is an artfully designed, full-rim frame, featuring Cx1 DT lenses with cutting-edge technology for indoor lighting conditions. Rectangular lenses and straight lines give the Grant a clean, smart style for any occasion. Shiny black finish adds a sleek effect. Durability features, such as premium acetate and stainless steel spring hinges provide a more flexible fit that curves to the face over time. Case included.

Frame size: Medium 55-15-140.

  • PROPRIETARY SPECTRAL LENS TECHNOLOGY: Our award-winning lens technology is the result of more than a decade of pioneering research by EnChroma scientists, and is uniquely engineered to enhance color vision for people with color vision deficiency.
  • SCIENTIFICALLY FORMULATED AND DESIGNED IN BERKELEY, CA: EnChroma’s eyewear is made in our medical device manufacturing facility where EnChroma technicians perform 100% of lens machining, assembly, and quality verification using a combination of imported and US components.
  • BEST-IN-CLASS LENS MATERIAL: Our lens material is made with Trivex®, an optical-grade resin that delivers a best-in-class combination of impact protection, lightness, and clarity.
  • 100% UV PROTECTION: EnChroma lenses block 100% of the UVA and UVB radiation components in sunlight. According to the World Health Organization, UVA rays are unfiltered by the atmosphere and can cause the most damage to vision health.
  • ULTRA-TOUGH ANTI-SCRATCH COATING: To ensure a long service life free of scratches, our lenses are clad with an optically clear, thermal-crosslinked coating to provide added lens durability.
  • CLARITY ENHANCING ANTI-REFLECTIVE COATING: Lenses without anti-reflection coatings reflect up to 12% of light back into your eyes. EnChroma lenses feature dual-surface anti-reflective coatings to reduce reflections by more than 90%.
  • SUPERHYDROPHOBIC TOP COAT: This water repellent surface treatment makes the lens slippery so that dust and dirt can be easily removed with a quick wipe of the included microfiber cloth.
  • EXTRAS: Signature box, hard-case, EnChroma® cleaning cloth, microfiber carrying bag, user guide, and colorful balloons included.
  • WEAR PRESCRIPTION GLASSES? EnChroma lenses can be custom made for your prescription needs, including single vision and progressive correction. Or, try our Receptor Fitover to conveniently wear EnChroma glasses over your existing prescription eyewear.
  • WEAR CONTACTS? Our standard (non-prescription) eyewear can be combined with your existing contact lenses to deliver comprehensive color and clarity correction.
  • 100% SATISFACTION GUARANTEE: EnChroma backs up every purchase with our 60-Day Money Back Guarantee and 2-year Warranty See details.
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WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.

How does this warning relate to EnChroma glasses?

Like most eyewear frames, EnChroma frames may contain stainless steel hardware components such as wire, hinges and screws. Stainless steel is an alloy of iron, chromium and nickel. Metallic nickel has been classified as a possible carcinogen and is on the Prop 65 warning list.

What testing does EnChroma perform on its frames?

EnChroma uses an independent third party laboratory to test its frames and lenses for compliance with international standards including EN 16128:2015. EnChroma frames are compliant with the requirement for upper limit of nickel migration as specified in paragraph 1(b) and (c) of entry 27 of Annex XVII to the REACH. REACH is a European Union regulation concerning the Registration, Evaluation, Authorisation and restriction of Chemicals. However, the REACH is not recognized by the State of California. For more information and Prop 65 and how it applies to eyewear and EnChroma products contact support@enchroma.com

NOTICE: EnChroma glasses are an optical assistive device for enhancement of color discrimination in persons with color blindness; they are not a cure for color blindness. Results vary depending on the type and extent of color vision deficiency per individual. Read More

EnChroma does not endorse the use of the glasses to pass occupational screening tests such as the Ishihara test: these tests may be required in occupations where public safety is at risk such as public transport operators, electricians and first responders. Wearing of any filtering lens including colored contact lenses during test administration is prohibited and may invalidate the accuracy of the results.

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Customer Reviews

Based on 16 reviews
I was pretty sure color blindness was entirely physical and there was NO improvement possible

After trying the enchroma sunglasses and indoor glasses for about a month - only using them occassionally (about twice a week) I am now noticing a difference betweeen purple and blue - which I have always had a problem with. I am not only able to see a slight difference and sometimes able to make the distinction without the glasses, I am also noticing an INTEREST in color. It is not the 'so what color is this' that my classmates used to pester me with - it is the 'so what is different now? oh wow so purple is slightly more RED than blue... oh wow!!!' This has been an amazing experience and I would have never thought that I would be able to perceive these color differences WITHOUT the glasses. Its almost as if the glasses are helping to train my eyes / perception to perceive the colors I had always been told 'i cannot see'. it is absolutely and eye opening experience. I hope that over time the color perception continues to improve. If this is all i get, that is still an amazing difference. I am now able to see differences between colors that i previously would have had difficulty even beginning to see.


I was skeptical for a long time. I couldn't believe something as monumental as color vision could be improved but here we are. They recommend you let your eyes adjust to the light and color over the span of a few minutes but my eyes were immediately impacted. I never knew the world was as vibrant and colorful as it was. It's given me a wildly new perspective on everything, which is something I didn't see coming. No pun intended. I haven't taken them off since I got them and I don't think I will ever. I want to see everything and anything.

Grant Cx1 Indoor DT glasses

Grant Cx1 Indoor DT glasses are great. It made watching the movie Cats easier to follow because I could now see the colors of each cat and didn't have to work hard to constantly pay attention of each cats design of their coat to know who was who. I love them to watch a sunset too, even though they're for the inside. I highly recommend them.

Life is no longer flat and washed out

Having been color blind for decades until I got my outdoor enchromas I never (until then) understood why people enjoyed the leaf changing season in October, animated films, television, fine arts, etc. I liked fine arts but I didn't know the half of it, or really the 90% of it. I now have the indoor enchromas and the same effect has occurred for me indoors as it does outdoors in the sunshine. It is no exaggeration to say that these glasses have been life changing for me.

You can see people weeping in youtube videos when they first get their enchromas, they are not acting or faking. It is literally overwhelming to suddenly see how beautiful the world really is, that colors are rich and full, and the palette of colors extraordinary and great. People get emotional when they see this beauty for the first time, and also at the same time realize that all of their lives they have been missing all of it. So, overwhelmed with what they now have, and horrified to know finally what they've always been missing but did not understand at all, they are overwhelmed.

This is extraordinary and excellent technology that will change your life if you are a color blind person as I am. I am a big fan of enchroma for these reasons. And no, the company did not pay me to write this review.

It's fantastic stuff, and the more people who get to use it the better. Why would I oppose anybody enjoying the richness of colors that most people take for granted as simply "daily life?" Well, let me tell you, it's much more than just "daily life." It's a sort of technological miracle. So, thank you, Enchroma!!


The glasses helped me to see color properly and to function in my classes that require the use of color vision. I am truly seeing the world through new lenses, and I couldn't be happier. Thanks Enchroma!

Cx3 Sun Deutan &
Bright Sun
Cx3 Sun SP Strong
Bright Sun
Cx1 Indoor Deutan &
Indoor Light,
Screen Use
Cx1 Indoor DT Deutan Indoor Light,
Screen Use
We recommend the Outdoor Lenses for your first pair for maximum color impact.
See full Lens Guide for additional Details.
*Cx1 Indoor: Ideal for Protans; May also be appropriate for Deutan color blindness.
Experience may vary. For best results, use indoors with bright full-spectrum lighting rated CRI of 90+.