Hi -- Yesterday afternoon I used my finger to poke a bathroom ceiling to examine what appeared to be a little bit of water damage. The water damage must have been old, as the ceiling wasn't damp, but a few plaster flakes fell down on me from the ceiling, and at least one piece landed in my eye. Within 5 minutes (maybe sooner?), I started rinsing my eye out with tap water and then artificial tears, which I probably did for 5-10 minutes.