Contact Lenses and Swimming
Why Swimming with Contact Lenses Is Risky
Every type of water contains bacteria, parasites, and other microorganisms that can harm your eyes. Even well-maintained pools with chlorine still harbor tiny organisms that standard chemical treatments cannot completely eliminate.
Natural bodies of water like lakes, rivers, and oceans carry even higher concentrations of potentially dangerous pathogens. These microscopic threats pose minimal risk to your skin but can cause devastating infections when trapped against the delicate surface of your eye.
When water gets under your contact lens, it creates a warm, moist environment between the lens and your cornea. This space becomes an ideal breeding ground for microorganisms.
Your natural tear film normally flushes away foreign particles, but a contact lens prevents this protective mechanism from working properly. Pathogens become trapped in place, giving them extended contact time to penetrate your corneal tissue and cause infection.
Contact lenses absorb chemicals from pool water like a sponge. Chlorine and other sanitizing agents attach to the lens material and can irritate your eyes for hours after you leave the pool.
- Chemical exposure can cause redness and burning sensations
- Absorbed substances may alter the lens shape or flexibility
- Modified lenses can scratch your cornea or reduce oxygen flow
- Chemical buildup makes lenses uncomfortable and potentially unsafe
Contact lenses are designed to maintain their shape in your natural tears, which have a specific salt concentration. Water dilutes this balance and causes lenses to swell or warp.
Swollen lenses may suction tightly to your cornea, making them difficult or painful to remove. This tight seal can reduce oxygen reaching your eye and may even cause small tears in your corneal surface when you finally pull the lens free.
Eye Infections and Complications from Swimming in Contacts
Acanthamoeba is a microscopic parasite found in nearly all water sources, including tap water, pools, hot tubs, and natural bodies of water. When trapped under a contact lens, these parasites can burrow into your cornea and cause a severe infection called Acanthamoeba keratitis.
This infection is extraordinarily painful and difficult to treat. Even with aggressive therapy, many patients experience permanent vision loss, and some require corneal transplants. The condition can take months to resolve and may resist standard antimicrobial treatments.
Bacteria such as Pseudomonas aeruginosa thrive in water environments and can rapidly invade corneal tissue when contact lenses trap them against your eye. Bacterial keratitis develops quickly and can permanently damage your vision within 24 to 48 hours if left untreated.
Fungal infections, while less common, also pose serious risks. These infections typically progress more slowly than bacterial ones but often prove harder to treat and may require weeks or months of specialized antifungal medications.
When infections penetrate deep enough into your cornea, they create open sores called corneal ulcers. These ulcers cause severe pain, light sensitivity, and blurred vision.
- Ulcers can expand rapidly without prompt treatment
- Healing ulcers often leave behind scar tissue on the cornea
- Scars in the central visual zone permanently reduce clarity
- Severe scarring may require corneal transplant surgery
If you develop symptoms after water exposure with contact lenses, we will perform a thorough examination of your cornea using specialized microscopy. This allows us to identify any signs of infection, inflammation, or ulceration.
We may gently collect samples from your eye surface using a sterile swab or spatula. These samples go to the laboratory for culture and analysis to identify the specific organism causing your infection. Accurate identification helps us select the most effective treatment for your particular situation.
Treatment depends on which type of organism is causing your infection. For bacterial keratitis, we typically prescribe intensive antibiotic eye drops that you may need to use as frequently as every hour initially.
Acanthamoeba infections require specialized antimicrobial drops, sometimes in combination, used multiple times daily for months. Fungal infections need antifungal medications that may not be available in standard eye drop form and might require compounding. In severe cases, we may recommend oral medications or, rarely, surgical intervention to remove infected tissue.
Contact our office immediately if you experience any of these symptoms after swimming with contact lenses in place.
- Severe eye pain that keeps getting worse
- Significant redness that does not improve within hours
- Light sensitivity that makes it hard to keep your eyes open
- Blurred vision or a white spot visible on your eye
- Excessive tearing or thick discharge from your eye
Safe Alternatives for Clear Vision While Swimming
Prescription swimming goggles offer the safest option for clear underwater vision. These goggles feature corrective lenses built into watertight frames that keep all water away from your eyes.
You can order goggles matched to your exact prescription, including options for nearsightedness, farsightedness, and even astigmatism. Many sporting goods stores and online retailers carry a wide selection of styles and prescription strengths.
If you must wear contact lenses for swimming, daily disposable lenses combined with properly fitted, watertight goggles represent the least risky approach. The goggles act as a barrier to prevent water from contacting your lenses.
You must remove and discard the lenses immediately after swimming, even if no water reached your eyes. Never reuse these lenses or store them in solution for later wear. Check your goggles before each swim to ensure they create a complete seal around your eyes.
Many people with mild to moderate prescriptions can swim safely and comfortably without any vision correction. Your primary activities in the pool or open water may not require sharp distance vision.
- Recreational swimming often needs only basic spatial awareness
- Lap swimming in a familiar pool requires minimal visual detail
- Swimming with others provides extra safety and guidance
- Keeping your head above water reduces the need for correction
Refractive surgery procedures like LASIK, PRK, or SMILE can permanently correct your vision and eliminate the need for contacts during swimming and other water activities. These procedures reshape your cornea to improve how your eye focuses light.
If you swim frequently and find contact lens restrictions frustrating, we can evaluate whether you might be a good candidate for refractive surgery. Recovery time varies by procedure, but most patients achieve clear vision without corrective lenses within weeks of surgery.
What to Do If You've Already Swum with Contact Lenses
As soon as you finish swimming and can do so safely, take out your contact lenses. Handle them gently to avoid spreading any contaminants deeper into your eye tissue.
Place the lenses directly into the trash. Do not attempt to clean or disinfect them for future use, even if they are monthly or bi-weekly lenses that would normally be reused.
After removing your lenses, flush your eyes thoroughly with sterile saline solution designed for eye use. This helps wash away some of the microorganisms and chemicals that may have accumulated under your lenses.
Never use tap water for this rinse, as it can introduce additional pathogens. Purchase sterile saline at any pharmacy in the eye care section. If you do not have saline available, your natural tears will provide some cleansing action until you can obtain proper supplies.
Resist any temptation to reinsert contact lenses that have been exposed to water, even after cleaning them with solution. Standard contact lens disinfecting solutions cannot reliably kill all waterborne pathogens, particularly Acanthamoeba cysts.
- Cleaning solutions work against common bacteria but not parasites
- Contaminated lenses may look and feel perfectly normal
- Reusing exposed lenses dramatically increases infection risk
- The cost of replacement lenses is minimal compared to treating an infection
Watch for any developing symptoms over the next 48 to 72 hours, as some infections take time to produce noticeable signs. Pay attention to changes in comfort, vision, or appearance.
Keep track of any mild irritation to see if it improves or worsens. Normal chlorine irritation should resolve within a few hours, while infection-related symptoms typically intensify over time.
Reach out to us if you notice any persistent discomfort, redness, or vision changes after swimming with contacts. Early detection makes treatment far more effective and can prevent permanent damage.
We would rather examine your eyes and find nothing wrong than have you wait while a serious infection progresses. Do not hesitate to schedule an appointment if anything feels off, even if your symptoms seem mild.
Protecting Your Eyes from Water Exposure
Hot tub water creates an especially dangerous environment for contact lens wearers. The warm temperature accelerates bacterial and parasitic growth, while chemicals break down faster and become less effective.
Steam and splashing from hot tubs make it nearly impossible to keep water away from your eyes, even if you try to keep your head elevated. Always remove your contact lenses before entering a hot tub and wait several hours after exiting before putting in fresh lenses.
Natural bodies of water contain far more microorganisms than treated pools because they lack chemical sanitization. Runoff from land brings bacteria, parasites, and pollutants into these water sources.
- Lake water often harbors high concentrations of Acanthamoeba
- River currents stir up sediment containing various pathogens
- Ocean water includes bacteria adapted to saltwater environments
- Murky or stagnant water poses especially high contamination risks
Tap water running from your shower contains the same microorganisms that make swimming dangerous, including Acanthamoeba. Water splashing on your face during a shower can easily flow into your eyes.
Many people shower with their contacts because they need vision correction for washing and grooming. Consider showering with your eyes closed when rinsing your hair, or remove your lenses before showering and use prescription glasses for tasks that require clear sight.
If water unexpectedly splashes into your eyes while wearing contacts, remove the lenses as quickly as possible. Throw them away immediately rather than attempting to salvage them.
Cleanse your eyes with sterile saline and insert fresh replacement lenses only after your eyes feel completely normal. If you experience any lingering irritation, wait until it fully resolves or contact our office for guidance before putting in new lenses.
Frequently Asked Questions
Even brief water contact can introduce pathogens under your lenses. The risk from a quick splash is lower than full swimming immersion, but we still recommend removing and discarding the lenses if water reaches your eyes.
Brief exposure to small amounts of water is less likely to cause problems, but you should monitor for symptoms and replace your lenses with a fresh pair when convenient.
No contact lens type is truly safe for swimming, but daily disposable lenses carry slightly less risk because you discard them immediately after exposure. Rigid gas permeable lenses are more likely to fall out in water, while soft lenses absorb more water and chemicals.
Regardless of lens type, the safest choice is always to remove all contacts before water activities.
Keeping your eyes closed reduces but does not eliminate the risk. Water can still seep between your eyelids, especially during diving or underwater swimming.
Chlorine vapors and steam can also affect your lenses even when your eyes remain shut. Closed eyes offer no reliable protection against the serious infections that contact lens swimming can cause.
Chlorinated pools are somewhat safer than untreated water sources, but they still contain microorganisms that chlorine cannot fully eliminate. Acanthamoeba cysts are particularly resistant to standard pool sanitizers.
Well-maintained pools have lower pathogen counts than lakes or rivers, yet they still pose significant risks when combined with contact lens wear. We recommend avoiding contact lens use in all water environments.
After swimming without contact lenses, you can insert fresh lenses once your eyes are completely dry and free of pool chemicals or other water residue. This usually takes about 30 minutes to one hour after leaving the water.
If you swam with contacts and removed them afterward, watch your eyes for any irritation signs for at least several hours before considering new lenses. When in doubt, waiting longer is always the safer approach.
Getting Help for Contact Lens-Related Eye Problems
If you experience any eye discomfort, vision changes, or other concerns after water exposure with contact lenses, our eye doctors are here to help. Early evaluation and treatment can prevent minor irritation from developing into serious complications. We encourage you to reach out with questions about safe contact lens practices or to schedule an examination if symptoms develop.