@horse as far as I know, the ones I used had the correct lenses for protanopia, and I can't find anything on the enchroma website to say they've got an extra strong version, just "protan lenses".
Since they work by partially blocking the colours you *can* see, they'd have to block out almost everything to have an effect on me.
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Christian Lawson-Perfect (christianp@mathstodon.xyz)'s status on Tuesday, 16-Jan-2024 00:34:53 JSTChristian Lawson-Perfect