I had a similar experience on my normal bicycle commute here in Connecticut. A 4 way intersection on my normal route had the marked crosswalks at the intersection repainted and had glass powder applied over the paint. As I took a right turn at the intersection on a green light the horizon inverted and I was down in an instant. Had a fairly big patch of road rash on my hip but no other injuries.
Walking back to the crosswalk, I could see leftover glass powder accumulated and could feel how slippery it was underfoot.
So in addition to the painted highway lines, watch the surface at crosswalks and other road surface markings too.
At the end of the day, I assigned a portion of the blame for the crash to myself for not noticing the change in the road surface.
Hope the healing goes well.