Why Swimming with Contact Lenses Is Risky
Wearing contact lenses while swimming carries significant risks. Water—whether from a pool, ocean, or lake—contains harmful bacteria and microorganisms that can become trapped between your lens and your eye, causing irritation and infection. Contact lenses are porous by design, which allows your eyes to breathe, but this same porosity means they absorb water and anything in it.
Here is how water exposure affects different swimming environments:
| Risk Type | Pools | Oceans/Lakes | Consequences |
|---|---|---|---|
| Infection and Microorganism Exposure | Lower than natural water, but chlorine does not eliminate all pathogens; water still contains bacteria and viruses | Higher; naturally contains bacteria, protozoa, and parasites like Acanthamoeba | Eye infections, potentially serious if untreated |
| Chemical Irritation | Chlorine causes redness, dryness, and light sensitivity even without contact lenses | Salt irritates and dehydrates the eye surface | Dry eye syndrome, temporary discomfort, or persistent irritation |
| Mechanical Irritation and Corneal Damage | Water absorption swells lenses; friction increases risk of small scratches | Same as pools, plus higher particulate matter in natural water | Corneal abrasions, increased vulnerability to infection |
What this means in practice:
- Pools are not “safe” simply because they are treated with chemicals; chlorine cannot eliminate all harmful organisms, and the chemicals themselves irritate your eyes.
- Natural water (oceans and lakes) typically carries a higher microbial load and presents greater infection risk than pools, though both carry real danger when combined with contact lenses. Less risky does not mean safe.
- Water causes contact lenses to swell and change shape, which can scratch your cornea even if no infection occurs.
- Eye irritation and dryness after water exposure are common and uncomfortable, but more serious infections can develop silently over days or weeks.
- Individual risk varies based on water quality, lens type, eye health, and how long your lenses are exposed; consult an eye doctor for personalized guidance on your specific situation.
The most common problems beginners notice are eye irritation, dry eye sensation (especially with chlorine or saltwater), and painful scratches on the cornea (the clear outer layer of your eye). These issues are often temporary but can worsen if you continue wearing lenses in water or delay care. More serious infections are possible too, which is why the safest choice is to remove your contact lenses before swimming and use an alternative—covered later in this guide.
The Biggest Threat: Acanthamoeba Keratitis and Other Infections
Acanthamoeba keratitis is a rare but severe eye infection caused by a microscopic parasite called Acanthamoeba, which thrives in water sources like pools, lakes, oceans, hot tubs, and even tap water. This parasite can stick to contact lenses, which absorb water and trap the microorganism directly against the cornea—the clear, protective front surface of the eye—allowing the infection to take hold more easily.
Water exposure with contact lenses creates a uniquely risky environment because the lenses absorb microorganisms, holding them in prolonged contact with the cornea, where even a tiny scratch can let pathogens invade. Treatment for Acanthamoeba keratitis is often prolonged and challenging, sometimes requiring intensive eye drops around the clock, and it carries a potential risk of serious complications like permanent vision loss or the need for a corneal transplant in severe cases. This underscores why swimming with contact lenses heightens vulnerability to such threats.
Other potential infections and inflammatory complications from water exposure with lenses include corneal ulcers (open sores on the cornea that can deepen and scar), uveitis (inflammation inside the eye that causes pain and light sensitivity), and general eye inflammation that worsens discomfort and healing time.
A Real-World Example of Acanthamoeba Keratitis
Consider a young swimmer who wore her contact lenses during a beach outing. After swimming with contact lenses in the ocean, she soon felt intense pain, like a sharp pebble trapped under her eyelid. The Acanthamoeba infection progressed over months, causing excruciating pain that persisted despite treatment, blurred vision, and sensitivity so severe she couldn’t tolerate light—highlighting how this condition can disrupt daily life for a prolonged period.
Early recognition of symptoms is crucial for better outcomes. Use this checklist to monitor for signs of infection after any water exposure with contact lenses:
- Redness in one or both eyes that worsens over time
- Severe pain or discomfort disproportionate to any visible irritation
- Light sensitivity that makes bright environments unbearable
- Blurred or hazy vision
- Excessive tearing or watery eyes
- Feeling of a foreign body, like sand, stuck in the eye
If you notice any of these signs, contact an eye doctor or optometrist right away for prompt evaluation—do not wait, as early intervention matters.
What to Do If You Accidentally Swim with Contact Lenses
Accidents happen, like forgetting to remove your contact lenses before jumping into a pool at a party or getting an unexpected splash during water exposure. Even a quick shower mishap can expose your lenses to water, increasing risks of irritation or infection. Follow this step-by-step action plan to minimize harm—remember, this is general harm-reduction guidance, not medical treatment, so consult an eye doctor for personalized advice or any concerns.
Here is the immediate post-exposure action checklist:
- Immediately after exposure: Wash your hands thoroughly with soap and dry them before touching your eyes. Remove your contact lenses right away to prevent further water absorption and pathogen trapping.
- Right after removal: If wearing daily disposable lenses, discard them immediately—do not reuse, as water contamination makes them unsafe. For reusable lenses, place them in a clean lens case with fresh disinfecting solution.
- Immediately after removal: Flush your eyes gently with artificial tears or rewetting drops to rinse away potential irritants and lubricate. Avoid rubbing your eyes, as this can push microorganisms deeper or cause abrasions.
- Later that day or overnight: Clean and disinfect reusable lenses thoroughly using your regular multi-purpose solution, following the product’s instructions. Let them soak overnight in fresh solution before considering reuse, but monitor your eyes closely.
- Next 24–48 hours: Switch to glasses if available and avoid wearing contact lenses. Use artificial tears as needed for comfort, and keep an eye on symptoms like redness, pain, or blurred vision.
- Next 24–48 hours: Schedule an exam with your eye doctor if any discomfort persists or worsens, even mildly. Early evaluation can catch issues before they escalate.
Consider this beginner scenario: You are rushing through a post-swim shower without thinking and water hits your eyes while wearing contact lenses. Act on the checklist starting with hand washing and immediate removal to reduce risks from even brief water exposure, which applies to showers just like pools.
Safety Tips If You Must Swim with Contact Lenses
While the best practice is to avoid swimming with contact lenses altogether, if it is unavoidable, these harm-reduction steps can help minimize risks like water exposure and irritation. No precaution eliminates the chance of infection, so prioritize consulting an eye doctor for personalized advice.
Precautions Checklist
Follow this checklist every time to reduce potential harm from swimming with contact lenses:
- Wear tight, well-fitting goggles that create a secure seal around your eyes to limit water contact.
- Minimize time with your head submerged to shorten exposure to pool water or other sources.
- Remove contact lenses immediately after swimming, before rubbing your eyes or touching your face.
- Switch to daily disposable lenses if possible, as they are safer than reusable lenses for occasional swimming since you discard them right away.
- Carry a backup pair of glasses and a clean lens case with solution for quick changes.
- Avoid hot tubs, showers, or any non-sterile water exposure while wearing lenses, following general hygiene guidance to never let tap water touch them.
For added comfort after swimming, use artificial tears or rewetting drops to lubricate dry eyes, but this does not prevent infections. Consult an eye doctor if irritation persists.
Common Goggle Fitting Pitfalls to Avoid
Even with goggles, poor fit can lead to leaks or discomfort, allowing water near your contact lenses. Look for adjustable straps that hug your face without pinching, soft silicone seals that conform to your skin, and anti-fog coatings for clear vision. Test the fit by pressing gently—if water seeps in during a splash test or you feel pressure on your temples, try a different size. Beginners often overlook temple bridge fit, which causes gaps; choose models with multiple size options for a snug, leak-free seal.
Better Alternatives: Prescription Swim Goggles and Vision Correction
Prescription swim goggles offer the safest way to see clearly underwater without the risks of swimming with contact lenses. These goggles come in two main types: step diopters, which have fixed prescription strengths molded into the lenses, and goggle inserts, which are custom prescription lenses that snap into standard swim goggles.
Step diopters typically cost $20–40, making them an affordable option for many swimmers, while goggle inserts may run higher depending on your prescription. Fit is crucial—choose goggles with adjustable straps and soft silicone seals to prevent leaks, and ensure a snug but comfortable seal around your eyes. Field of vision varies; step diopters often provide a wider view for casual swimming, while inserts can match your exact prescription for better clarity in competitive scenarios.
Common pitfalls in goggle fitting include over-tightening, which causes pressure headaches or brow marks, or a loose seal that lets water trickle in during dives. To avoid these, test the fit by inhaling gently through your nose while pressing the goggles to your face—if they stick without straps, the seal is good. Select anti-fog coatings for longer sessions and tinted lenses if swimming outdoors.
| Aspect | Step Diopters | Goggle Inserts |
|---|---|---|
| Cost | $20–40 (fixed strengths) | $50+ (custom prescription) |
| Fit | One-size-fits-most; limited strengths | Exact prescription match; adaptable to goggles |
| Field of Vision | Good for general use; some peripheral limits | Excellent clarity; matches goggle frame |
| Convenience | Ready-to-use; no assembly | Versatile with multiple goggles; more setup |
For a simple decision guide, consider your swimming habits:
- Frequent swimmers should choose prescription swim goggles for reliable underwater vision without contact lenses.
- Occasional swimmers can opt for prescription swim goggles or bring backup glasses to the pool.
- Those seeking permanent vision correction may discuss LASIK or PRK with an eye doctor to reduce reliance on lenses or glasses.
LASIK or PRK can eliminate the need for contact lenses or glasses in many cases, with recovery often around 2–4 weeks before returning to swimming. However, suitability varies by individual eye health—consult an optometrist for a personalized assessment, as these procedures are not suitable for everyone.
Final Tips for Contact Lens Wearers
To stay safe as a contact lens wearer, focus on prevention and preparedness around water. Consult an eye doctor or optometrist for personalized guidance, especially if you swim frequently or have experienced irritation or infections in the past.
Here are key do and don’t reminders to protect your eyes:
- Always carry backup glasses, a clean lens case, and solution when heading to a pool, beach, or lake.
- Plan ahead for lens removal right after any swim—set a phone reminder or note on your gear.
- Opt for daily disposable lenses on swim days if you must wear contact lenses, as they reduce reuse risks.
- Do not shower, use hot tubs, or face sprinklers with your contact lenses in, even briefly.
- Avoid rubbing your eyes if irritation starts—rinse with artificial tears if needed and monitor closely.
Quick Glossary
- Acanthamoeba: A microscopic parasite found in water sources like lakes, pools, and tap water that can cause serious eye infections when trapped under contact lenses.
- Cornea: The clear outer layer at the front of the eye that helps focus light; it is vulnerable to scratches and infections from water exposure with lenses.
- Keratitis: Inflammation of the cornea, often painful and linked to infections like those from waterborne microorganisms.
For competitive swimmers in niche scenarios, rigid gas permeable lenses (RGP) may be an option some eye doctors discuss, but they are not a simple solution for everyone and require professional fitting.
Quick Answers
- Are daily disposable lenses safer for occasional swimming? They are a lower-risk choice than reusable lenses if exposure happens, since you discard them immediately afterward.
- Can rewetting drops fix post-swim irritation? They may soothe mild dryness, but persistent issues need an eye doctor evaluation.
- Is it okay to swim with contact lenses if wearing goggles? Goggles help but are not foolproof—leaks or fogging can still expose lenses to water.
- What if I forgot and jumped in a pool quickly? Remove lenses right away, discard if daily disposables, and watch for redness or pain over the next day.
Frequently Asked Questions
Can you swim with contact lenses in a pool?
No, it is not safe to swim with contact lenses in a pool, even though chlorine reduces some risks. Pools still contain microorganisms that contact lenses can absorb and trap against your eye, leading to irritation or infections like corneal ulcers, and chlorine itself can cause dryness and chemical irritation.
What is Acanthamoeba keratitis?
Acanthamoeba keratitis is a rare but severe eye infection caused by a microorganism found in water that contact lenses can trap against the cornea. It can lead to intense pain, corneal ulcers, and potential vision complications if not addressed promptly by an eye doctor.
What to do if water gets in eyes with contact lenses?
Immediately remove your contact lenses, wash your hands first, discard them if they are daily disposables, and rinse your eyes with sterile saline or artificial tears. Monitor for redness or pain over the next 24–48 hours and consult an optometrist if symptoms appear, as water exposure raises infection risks.
Are prescription swim goggles worth it?
Yes, prescription swim goggles are often worth it for frequent swimmers needing clear vision without contact lens risks. They keep water away from your eyes using options like step diopters or goggle inserts, though proper fit is key to avoid leaks.
Is LASIK safe for swimmers?
LASIK or PRK can be a good option for swimmers after full recovery, often around 2–4 weeks, but consult an eye doctor first to assess your suitability. These procedures eliminate the need for lenses during water activities, though individual results vary and post-surgery care is essential.
Can you wear contact lenses in the ocean or lake?
No, avoid wearing contact lenses in oceans or lakes, where higher levels of bacteria and microorganisms pose greater infection risks than pools. Natural water can easily adhere to lenses, increasing chances of serious issues like eye inflammation or corneal abrasions.
Is it okay to shower with contact lenses?
No, showering with contact lenses exposes them to tap water microorganisms that can cause infections. Always remove them beforehand or switch to glasses to prevent accidental water exposure risks similar to swimming.
