10/30/2016 9:24 AM PDT BY TMZ STAFF
David Cassidy wore his medical alert bracelet on his sleeve Friday night, going bananas on a fan who ignored his considerable ailments just to get a little video.
The 66-year-old former Partridge Family star was performing at Hudson Valley Theater in Peekskill, NY when a fan shined a cellphone light smack into his cornea.
You gotta watch … David somehow thinks people know he’s had 5 eye surgeries and counting, and issues an ultimatum … eject the dude or he won’t continue.
Click here for the video http://www.tmz.com/videos/0_3hpvbuh3