Chlorine: The Cause of Irritated Eyes of Swimmers?
From Healthy Pools
The most common misconception surrounding swimming pools is the cause for the "Chlorine" smell, eye and skin irritation, and skin disorders. A properly chlorinated pool will not smell, will not irritate eyes, and will not be a catalyst for spreading disease. The concept, simply put, is that chlorine has three distinct components that determine it's killing capacity: Total Chlorine, Free Chlorine, and Combined Chlorine. Combined Chlorine is the culprit, and is caused by the chemical reaction that occurs when chlorine actually does it's job. This post from Healthy Pools expounds on this concept, and busts an often perpetrated urban legend around chlorine and swimming pools.
Here is an excerpt from the post: