How Chlorine and Saltwater Affect Your Eyes

Photo of a kid with eyes closed sitting in a pool

There’s nothing quite like diving into a pool or taking a dip in the ocean on a hot summer day, but if you’ve ever come out of the water with stinging, red, or blurry eyes, you’re not alone. Both chlorine and saltwater can affect your eyes in different ways, here’s what’s really going on and how to keep your vision comfortable after a swim.

Hands placing a chlorine tablet into a blue floating dispenser in a swimming pool.

Chlorine and your eyes

Chlorine is added to pools to keep the water clean by killing bacteria and germs. While it’s great for hygiene, it can be tough on your eyes. Chlorine doesn’t just wash away bacteria, it also strips away the tear film that keeps your eyes moist and protected. When that natural barrier is disrupted, your eyes can become irritated, dry, and red.

You might notice:

A burning or stinging feeling after swimming
Watery or itchy eyes
Blurry vision that clears up after a few minutes
Irritated eyes that are sensitive to light

If you swim often, the constant exposure can even lead to dry eye symptoms or make existing dryness worse.

A woman and two children smiling and splashing together in shallow ocean water at sunset

What about saltwater?

While ocean water feels more natural, it can still cause discomfort. Saltwater can draw moisture out of your eyes through osmosis, in other words, the salt content pulls water out of your eye’s surface cells, leaving them feeling dry and gritty.

How to protect your eyes

You don’t have to give up swimming to keep your eyes healthy. Try these simple tips:

Wear well-fitting goggles: they create a barrier to keep pool chemicals and saltwater out.
Rinse your eyes after swimming: use clean, fresh water to wash away chlorine or salt water.
Use artificial tears: lubricating drops can help restore your tear film and soothe dryness.
Avoid swimming with contact lenses: lenses can trap bacteria and chemicals against your eyes.
Give your eyes a break: if they feel irritated, avoid rubbing them and take time away from screens.

When to see an eye specialist

If your eyes stay red, sore, or blurry for more than a day or two after swimming, it’s worth booking an appointment. Sometimes, what feels like simple irritation can actually be a sign of infection or dryness that needs professional care.

Click here to book an appointment with our team to get personalised advice on how to keep your eyes healthy and comfortable, in and out of the water.

In summary

Chlorine and saltwater can both dry out and irritate your eyes, but a few small habits can help you keep swimming comfortably. Protect your tear film, wear goggles, and give your eyes the care they deserve after every swim.