Hello! Sometimes When I'm In The Shower I'll Start To

Hello! Sometimes when I'm in the shower I'll start to see colored lines dance across my vision. The coloring is similar to the rainbow coloring you would see if you shined a light through a diamond. Not sure if showers have anything to do with it but the incidents happen quite a bit more often in the shower. Is something wrong with my eyes? They don't feel tired when this happens. Thank you for your help!