Glasses come in grades of colorblindness severity
What you won't see on Amazon is that Pilestone glasses come in levels of colorblind deficiency. Go to the Pilestone website and you'll see that you can order anywhere from mild colorblind to severe colorblind glasses.<br /> My kids bought me my first pair without knowing how severe my color perception was. The first thing I did when they arrived was go on line and Google a color blind test. I first did the test without them. I got 3 out of 24. Then I put them on and got 8 out of 24. So they do work. Later I bought clip ons the clip ons for the severely color blind and nailed 14 out of 24.  I recommend the clip ons if you already have prescription glasses they are much sturdier than the weak framed stand alones. BTW I have trouble seeing reds and greens.
Rating: 4 stars