Swimming with contact lenses increases the risk of eye infections and discomfort, so it’s generally not recommended without protection.
Understanding the Risks of Swimming With Contact Lenses
Swimming pools, lakes, and oceans are tempting places to enjoy a sunny day, but if you wear contact lenses, you might wonder about the safety of swimming with them on. The short answer is: it’s risky. Contact lenses are designed to sit on your eyes in a clean, controlled environment. Water—especially natural bodies like lakes or oceans—contains bacteria, parasites, and other microorganisms that can easily cling to lenses and cause infections.
One of the most serious concerns is an infection called Acanthamoeba keratitis, caused by a parasite found in water. This infection can lead to severe eye pain, vision loss, or even blindness if untreated. Swimming with contacts exposes your eyes to this parasite, especially if you rub your eyes afterward or don’t disinfect your lenses properly.
Even chlorinated pool water isn’t completely safe. While chlorine kills many germs, it doesn’t eliminate all pathogens. Plus, chlorine itself can irritate your eyes when trapped beneath contact lenses. This irritation often results in redness, dryness, and discomfort that can linger long after leaving the pool.
How Water Affects Contact Lenses
Contact lenses are made from materials that absorb water to some extent. When submerged in water during swimming:
- Swelling: Lenses may absorb water and swell slightly.
- Shape Changes: This swelling can distort the lens shape, affecting vision clarity.
- Bacterial Contamination: Water may introduce bacteria or parasites that adhere to the lens surface.
- Lens Displacement: Water pressure can cause lenses to shift or even fall out.
The combination of these factors makes swimming with contacts risky for both eye health and vision quality. Swollen or misshapen lenses won’t correct your vision properly and may cause irritation or abrasions on the cornea.
The Difference Between Soft and Rigid Gas Permeable Lenses
Soft contact lenses absorb more water than rigid gas permeable (RGP) lenses because they’re made from hydrogel or silicone hydrogel materials designed for moisture retention. That means soft lenses swell more when exposed to water.
RGP lenses don’t swell but can still trap water underneath them during swimming. This trapped water often contains impurities that irritate the eye’s surface.
Both types pose risks when exposed to non-sterile water sources, but soft lenses generally carry a higher risk of swelling-related discomfort.
Risks Associated With Different Water Sources
Not all waters are created equal when it comes to swimming with contacts on. Here’s a breakdown of common water types and their associated risks:
| Water Source | Contaminants | Risk Level |
|---|---|---|
| Chlorinated Pools | Bacteria (some killed by chlorine), chlorine chemical irritation | Moderate – chemical irritation common; infection rare if pool well maintained |
| Lakes & Rivers | Bacteria, parasites (Acanthamoeba), algae | High – natural waters have diverse microorganisms; high infection risk |
| Ocean/Sea Water | Bacteria, salt, pollutants (varies by location) | Moderate to High – saltwater irritates eyes; pollutants increase infection risk |
| Spa/Hot Tubs | Bacteria (e.g., Pseudomonas), fungi due to warm temperatures | High – warm environment encourages bacterial growth; high infection risk |
| Treated Tap Water (e.g., showers) | Bacteria (usually low levels) | Low – generally safe but still not recommended for contacts due to contamination potential |
Swimming in lakes or rivers is particularly dangerous because they often harbor Acanthamoeba parasites which cling stubbornly to contact lenses.
The Science Behind Eye Infections From Swimming With Contacts On
Eye infections related to swimming with contact lenses typically stem from microbial contamination trapped beneath the lens surface. The lens acts like a breeding ground for germs since it reduces oxygen flow and traps moisture against your cornea.
Here’s what happens step-by-step:
- You swim wearing contacts; water containing microorganisms enters under the lens.
- The microbes stick to the lens’ surface or get trapped between lens and cornea.
- The moist environment encourages microbial growth.
- Your immune system reacts causing inflammation and symptoms like redness, pain, tearing.
- If untreated, infection worsens leading to damage such as corneal ulcers.
Because symptoms can mimic minor irritation initially, many people delay seeking treatment until damage is significant.
Acanthamoeba Keratitis: The Silent Threat
This rare but serious infection is caused by Acanthamoeba—a microscopic amoeba found in soil and water worldwide. It’s notoriously difficult to treat because it resists many medications.
Symptoms include:
- Severe eye pain disproportionate to redness or visible injury.
- Sensitivity to light (photophobia).
- Tearing and blurred vision.
- A feeling that something is stuck in your eye.
Wearing contacts while swimming dramatically increases exposure risk because these amoebae latch onto lenses easily.
Protecting Your Eyes While Enjoying Water Activities
If ditching your contacts before every swim sounds inconvenient (and it is), there are ways to protect your eyes without compromising fun:
Use Waterproof Swim Goggles Over Contacts
Properly fitting goggles create a seal that prevents pool or lake water from reaching your eyes. Choose goggles designed for tight seals around the eye sockets rather than loose-fitting ones.
Wearing goggles reduces contamination risk significantly but doesn’t eliminate it entirely—some leakage is possible during vigorous movement underwater.
Avoid Swimming With Contacts When Possible
The safest option is simply not wearing contacts while swimming. Instead:
- Wear prescription swim goggles if you need vision correction underwater.
- If you use daily disposables, discard them immediately after swimming.
This approach minimizes exposure time and lowers chances of infection.
Consider Daily Disposable Lenses for Swimming Days Only
If you must wear contacts near water occasionally:
- Select daily disposable lenses so you can toss them after each swim session.
- This prevents buildup of microbes on reused lenses.
Avoid extended-wear or monthly disposables when swimming since cleaning them thoroughly afterward is tricky.
Avoid Rubbing Your Eyes After Swimming With Contacts On
Rubbing spreads any trapped contaminants deeper into the eye tissue and worsens irritation. If discomfort occurs after swimming:
- Remove contacts as soon as possible using clean hands.
- If removal isn’t immediately possible, rinse eyes with sterile saline solution—not tap water.
Never use saliva or unsterilized liquids on your eyes—it only introduces more germs.
Caring For Your Contact Lenses Post-Swim: Best Practices
If you accidentally swim with contacts on—or choose to do so—proper cleaning afterward is crucial:
- Wash Your Hands Thoroughly: Use soap and dry hands before touching lenses.
- Remove Lenses Carefully: Avoid touching eyes directly; handle gently.
- Clean With Multipurpose Solution: Rub each lens gently with solution recommended by your eye care provider for at least 20 seconds per side.
- Disinfect Properly: Soak lenses in fresh disinfecting solution overnight; never reuse old solution.
- Avoid Using Tap Water: Never rinse or store contacts in tap water—it contains microorganisms harmful for eyes.
- If Symptoms Persist: Redness, pain or blurry vision require immediate professional evaluation from an optometrist or ophthalmologist.
Following these steps helps reduce microbial load but does not guarantee complete elimination of pathogens picked up during swimming.
The Role of Prescription Swim Goggles Vs Contact Lenses Underwater
Prescription swim goggles offer a safer alternative for those needing clear vision during aquatic activities without risking infections linked to contact lens wear underwater.
Advantages include:
- No direct exposure of eyes to contaminated water since goggles form a barrier around eyes.
- No need for post-swim disinfection routines associated with contacts.
- Easier maintenance: just rinse goggles after use with clean freshwater and air dry properly.
Some users find prescription goggles less comfortable than contacts outside the pool environment but they excel at protecting eye health while providing clear vision underwater.
The Impact of Swimming on Contact Lens Comfort Over Time
Even if infections don’t occur immediately after swimming with contacts on, repeated exposure poses long-term risks such as chronic dryness and reduced oxygen permeability through swollen lenses.
Water-related swelling causes temporary discomfort including burning sensations or gritty feeling that worsens throughout the day. This leads many swimmers who wear contacts regularly into a cycle of irritation that affects overall quality of life.
For people who love frequent aquatic sports yet rely heavily on contact lenses for daily life clarity, switching permanently to daily disposables combined with prescription goggles might be the most practical solution.
Key Takeaways: Can You Swim With Contacts On?
➤ Risk of eye infections increases when swimming with contacts.
➤ Water can cause contacts to stick or wash out unexpectedly.
➤ Use waterproof goggles to protect your eyes and lenses.
➤ Consider daily disposables if you must swim with contacts.
➤ Always clean and disinfect lenses after swimming.
Frequently Asked Questions
Can You Swim With Contacts On Safely?
Swimming with contact lenses is generally not safe due to the risk of eye infections and irritation. Water, especially from lakes, oceans, or pools, can introduce harmful bacteria and parasites that cling to lenses and cause serious eye problems.
What Are the Risks of Swimming With Contact Lenses On?
Wearing contacts while swimming increases the chance of infections like Acanthamoeba keratitis, which can lead to severe pain or vision loss. Additionally, lenses may swell or shift, causing discomfort and blurred vision.
Does Chlorinated Pool Water Make Swimming With Contacts Safer?
Chlorine kills many germs but doesn’t eliminate all pathogens in pool water. It can also irritate eyes when trapped under contact lenses, leading to redness, dryness, and discomfort even after swimming.
How Does Water Affect Contact Lenses When Swimming?
Water can cause soft lenses to swell and change shape, distorting vision. It may also introduce bacteria that stick to lenses. Water pressure might displace or remove lenses from the eyes during swimming.
Is There a Difference Between Soft and Rigid Lenses for Swimming?
Soft lenses absorb water and swell more than rigid gas permeable (RGP) lenses. RGP lenses don’t swell but can trap contaminated water underneath, which still poses risks of irritation and infection during swimming.
The Bottom Line – Can You Swim With Contacts On?
Swimming with contact lenses on isn’t worth gambling with your eye health. The risk of serious infections like Acanthamoeba keratitis combined with chemical irritation from chlorinated pools makes this practice unsafe without protective measures such as tight-sealing swim goggles.
If you must swim while wearing contacts:
- Select daily disposable lenses exclusively for swimming days only;
- wear snug-fitting waterproof goggles;
- diligently follow cleaning protocols immediately afterward;
- endure no rubbing;
and always consult an eye care professional at any sign of redness or discomfort after aquatic activities.
Your eyes deserve better than unnecessary risks—keeping them healthy ensures clear sight both in and out of the water!