KillerLag 2 points 6y ago
Photophobia is fairly common with many eye conditions, as the eye has trouble regulating how much light enters the eye. Historically, the solution to that was squinting and large brimmed hats (or staying inside). However, sunglasses have been used since the 12th century, and possibly even earlier (similiar to snow goggles).
One thing to that may matter is contrast. When there is strong contrast, it is easier for things to visually stick out (imagine a black dot on a white wall, as opposed to a light grey dot on a white wall). That works both ways, too (the green grass strongly contrasts next to a grey sidwalk, but after a bit of snow, everything is white and it becomes much more difficult to identify the sidewalk). Another common travel issue is misinterpreting what they can see. When someone is walking on the sidwalk and see a large black shape on the sidewalk, it may look like a hole to them, or it may just be some asphalt used to patch a hole.