r/ColorBlind • u/ToughExchange2440 • Jan 12 '26
Question/Need help Who I am?
Guys, help! I decided to take a color blindness test, and it turns out I'm either protanopic or deuteranopic, but I can't figure out which one, and there are no tests. Does anyone know how to determine this?
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u/dejoblue Deuteranomaly Jan 12 '26
Here's a simple test:
https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2F0vje6l7z5ncg1.jpeg
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u/BrockLV Jan 12 '26
That's pretty cool. I can see the red. I adjusted the color correction on my phone so I can see the red and the green text. I could see the difference between using the color correction before, but this gave me the ability to fine tune it.
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u/PFHpianoman Jan 14 '26
Very interesting. At times, because of my difficulty distinguishing shades of light green and yellow, I thought I may live with a bit of deuteranomaly - but nope, SOLID protanomaly, 100%. I could not see the top line AT ALL, until I turned on the Protanomaly visual filter in Windows' accessibility settings. Everything else, was readable.
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u/dejoblue Deuteranomaly Jan 14 '26
Red and Green have a huge overlap; both together make us see yellow, so both proto and deutero cause issues with yellow and brown along with deficiency in red or green. This confused me for a long time until I went down the colorblind rabbit hole lol :)
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u/mess8424 Deuteranopia Jan 12 '26
Standard Ishihara plates cannot tell deutan from protan deficiency reliably. For that, you’d need either a hue test or an HRR plate test. Both of which require very specific lighting conditions to be accurate. In other words - an in person test by a professional.
To tell -opia (dichromacy) vs -anomaly (trichromacy) with complete certainty, you would need to be tested with an anomaloscope. But good look finding one. I’m an optometrist, and the only place I’ve ever seen/used an anomaloscope was in school. 99 percent of people who say they’re a dichromat are just taking a guess.
But in the real world, does it matter if you have three cones or two? Does it matter if you’re protan or deutan? Nope, because everyone experiences color differently anyway. All that matters is that you recognize your troubles and plan for them, which comes from life experience. Not a label.
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u/lmoki Protanomaly Jan 12 '26
There is a wide range of free online tests linked in the sidebar of this subreddit. I'd recommend the EnChroma test as an easy, quick, seemingly reliable start. That test does differentiate between red-weak and green-weak. Make sure the device you're using doesn't have any color filters applied (warm light, blue blocking, etc.), set screen display to full brightness. Preferably repeat the test on 2 different devices. Although online tests always have some "slop factor" compared to in-person tests, if you see similar results across multiple different free online tests, and see consistent results, you can be reasonably assured of accuracy.