Why worry about something you can't fix? (Unless, of course, your monitor, not your vision, is the problem.) Unless you "do colour" for a living and have wondered why clients aren't banging down your door, it's probably not a real-world problem for you. (If it was a problem severe enough to be a safety hazard or mangle your fashion sense to the point that a hypothetical Garanimals For Grownups might be helpful, you would probably be acutely aware of it by now.) Hell, there's even at least one "name" professional photographer (Joel Grimes) who would score worse than you did. (Your problem is relatively subtle, apart from a bit of a mess in the red/yellow/green transition. You would probably have some real difficulty distinguishing the yellows of an egg yolk, a buttercup and a lemon, or at least being able to spot them in isolation. As handicaps go, I've seen worse.)
Well, I also do front-end web development from time to time and when I do, maybe I should consider having much more external advice on design matters than before. I never thought I had any problems, that's what worried me. Thank you very much for the explanation.
I tried it without much effort on my so-so Dell desktop display and got 59. Tried again on my RMBP with even less effort and got 14. However, I did have trouble in the same places both times so it's certainly demonstrating something.
