Hi Wiix, how were you able to dinstiguish between both?
In what ways were they similar or different?

Mark: is sensitivity to screen light, changes in angle of the camera (say in a soccer game on TV), scrolling on computer, a fairly common PCS problem.

I feel dumb not having inquired about these earlier: is the fact that my sensitivity is more severe on some days (good an bad weeks) also common PCS pattern?

Thanks