Dr. Glaucomflecken talks about eye irrigation in the event of pepper spray, including regarding contact lenses.
https://www.youtube.com/shorts/z4dy0Wgct90
(TLDW: a solid litre of water with no-tears-style baby shampoo, or failing that just plain water, don't use dairy, the potential damage from pepper spray makes it more likely to trigger an infection. And do NOT remove contact lenses quickly; wait until you can keep your eyes open with reasonable ease, _then_ remove them.)
