Red, irritated eyes after swimming are not caused directly by chlorine but by chloramines formed when chlorine reacts with nitrogen compounds like urine, sweat, and skin cells. These chloramines irritate the eyes and also create the strong “chlorine smell” often noticed in pools. Proper pool hygiene like showering before swimming and avoiding urinating in pools helps reduce chloramine formation and irritation. Well maintained pools with balanced chemistry minimize these effects significantly. Source: Centers for Disease Control and Prevention (CDC) Want more interesting content like this ? Follow gravitonomy :) #swimming #science #chlorination #biology