I have medium red green colour blindness.I am 56yo.I first saw colour correction glasses available 20 plus years ago but could not afford them.ColorTechs rasonable price attracted me.There is an American brand, Enchroma. Way too expensive for me.I ordered a week before xmas and was surprised to receive them just after new year. That's pretty impressive from the UK to Brisbane Australia at the busiest time of year!I read the instructions, put them on and was immediately impressed.Reds, Yellows, Greens and Blues all stand out.I spent the weekend with them on. Amazed at my colourful new world!I tested them on an Ishihara Test. Nailed it!I watched telly with them on. Wow, great stuff. Great product, only wish I had thought of getting them sooner.If I could get a pair of these with a 2.5 dioptre Bifocal, I'd never take them off!

First time my 21 year old son saw vibrant red/green colors! These glasses are wonderful!

After testing for type of colorblindness and researching options for blue/yellow lenses, we purchased lavish ColorTech lenses as a gift for someone special. This person was able to see and compare blue jeans, blue cars, and blue sky for the first time. He stated that our faces looked pale. That could be because WITHOUT the glasses I believe faces looked brighter pink rather than skin color to him because of the tritanomaly. So most likely he was actually seeing skin color more correctly . He was also able to see that there is different shades of greens in the landscape. .He could not quite comprehend that there was such a variation. He had to re-learn colors, that was somewhat frustrating to him, but was amazed to actually see the color sky for the first time. He described the blond highlights in my hair as gray hair. We are not sure if he was actually seeing yellow and named it gray, or maybe the glasses did not correct/enhance yellow. We may be trying the Yellow lenses soon to see what effect they may have. Overall, he said everything looked colorful/bright. His degree of colorblindness is individual to my knowledge so people with same type may or may not have the same effect. It is worth trying these glasses in my opinion for blue/yellow colorblind. Also, personally, I would recommend being tested by an eye doctor, especially because this type is rare compared to red/green colorblind. Thank you. This was an excellent experience for all of us. HE LOVES THE GLASSES. After 27 years, he is enjoying seeing colors. And yes, he did have emotional moments.

My brother loves these glasses. He sees colors brighter and sharper.Worth the money we paid for it.

Got these as a gift for my red green color blind husband. He loves them and they really work!! The crispness and clearness of the colors is phenomenal.He was skeptical but they work for him.

I bought for my son. He can be no happier. Wears them everyday. I have also recommended to my brother and a coworker who tried and also loved them. Would recommend them.

Great support!Questions were answered in minutes instead of hours or days.Keep up the good work.Lee

These glasses worked well to help distinguish red colors that are often very hard to see.

Christmas gift for my son..he teared up when he opened it and loves the glasses.

Both my son and father are color blind. They tried a pair and found them effective, particularly in outside lighting. They were amazed to see the difference shadows make on color and could actually differentiate between Christmas garland green and the green of the bushes the garland was next too. My son said "I am finally seeing the world the way I was supposed too."