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A comment on Show HN: Find the safest well lit walking route between two locations. Parent comment

Re:Show HN: Find the safest well lit walking route between t... by AdmiralGinge on Monday December 21, 2020 @11:24AM (#25496322)
This could really be a game-changer for me when we're allowed to travel again. I have a rare condition where a problem with brain metabolism screws up the signal to noise ratio in multiple senses, by day I'm quite photophobic and by night I can't see a thing thanks to "TV static" in my vision. Having a navigation tool that sticks to well-lit areas would be an amazing improvement over existing tools for me!
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Re:Show HN: Find the safest well lit walking route between t... by Roritharr on Monday December 21, 2020 @12:32PM (#25497151)
Out of curiosity, what's the name of your condition?

I have a friend where this could apply.

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Re:Show HN: Find the safest well lit walking route between t... by AdmiralGinge on Tuesday December 22, 2020 @10:39AM (#25507269)
As trishmapow2 correctly guessed, I have visual snow syndrome. Whether it's a quirk of vision or an outright disability really tends to depend on the intensity, for some people it doesn't affect their lives at all but for others it's completely disabling because they can't read any more. Personally I'm quite lucky, I'm never going to drive in the dark or be good at things that require excellent vision but I can still hold down a job as a programmer.
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Re:Show HN: Find the safest well lit walking route between t... by trishmapow2 on Monday December 21, 2020 @10:19PM (#25502488)
Possibly https://en.wikipedia.org/wiki/Visual_snow. I used to assume everyone had this but since it doesn't really affect day to day life for me it was never a concern.
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Re:Show HN: Find the safest well lit walking route between t... by Talanes on Monday December 21, 2020 @11:04PM (#25502726)
Oh, huh. I definitely experience all of those, though only the photophobia is really constant. I've also got a photic sneeze reflex, so I had just always chalked those two together as a sensitivity to direct sunlight, and didn't even think to consider the dots or floaters as odd or connected.
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Re:Show HN: Find the safest well lit walking route between t... by Roritharr on Tuesday December 22, 2020 @02:35AM (#25503903)
Same here, mind a bit blown atm.
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