I am an Optometrist in Ohio, and I bought Enchroma sunglasses for my colorblind son because he was interested in trying them, and I wanted to see how effective they would be. Initially, he put them on, said that he noticed a difference, but that it wasn't a life-changing difference.
He is now 16 and is learning how to drive. Because he has 20/20 vision, he had no problems passing the vision test when he obtained his temporary driver's license permit. When I first took him out to begin practicing how to drive, though, he found he was unable to distinguish the green traffic lights from the yellow traffic lights, and during the day he was unable to determine when many of the red traffic lights were lit.
I told him to put on his Enchroma glasses, and he IMMEDIATELY said he could distinguish the difference between the different traffic light colors. He kept looking over them and then through them, saying it was a very noticeable difference. This made me feel a lot better because he actually could see when the light changed from green to yellow and then to red, and he could see the red stoplights from far away.
He found the only difficulty with the outdoor Enchroma glasses was that they were too dark during cloudy days, bad weather days, or during night driving. I immediately purchased the indoor Enchroma glasses, and as soon as he put those on he said he could see the traffic lights in those darker conditions.
I know this is a long review, but I can't stress enough how much this has helped my son be able to drive comfortably. Even though he has 20/20 vision, he will wear Enchroma glasses all the time while he is driving and always have both of them in the car. It really is a life-changing difference.
As an Optometrist in private practice, I will be sure to let all of my patients know how valuable the Enchroma glasses can be.