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It depends on the nature of the deficiency. The most common form, red-green colorblindness, isn't a problem: I'm not aware of any situation where color coding is used to convey safety-critical information. On the other hand, if you've got rod monochromacy, climbing mountains is probably a bad idea.


I don't know whether e.g. mountain guides for expeditions are accepted if they have color vision deficiency. But as a participant I don't think this is a no-go criteria. There were guys with asthma and other serious medical limitations going on 8000+ and Mark Inglis made it on the Everest with two artificial legs. I don't know what you suppose of a ...

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