Temporary blurriness in vision after swimming in a chlorinated pool is a common experience. This phenomenon, often accompanied by mild eye discomfort, is generally not a cause for lasting concern.
Understanding the Cause of Blurry Vision
The primary reason for blurry vision after swimming is not solely the chlorine itself, but rather chemical compounds known as chloramines. Chloramines form when chlorine, used as a disinfectant, reacts with organic matter introduced into the pool water, such as sweat, urine, skin cells, and personal care products. These compounds are largely responsible for the strong “chlorine” smell often associated with pools, indicating their presence.
Chlorine and chloramines can disrupt the protective tear film that naturally coats the surface of the eye. This tear film keeps the eyes moist, and its disruption can lead to dryness and irritation. Furthermore, pool water often has a lower salt concentration than the eye’s natural tears, making it hypotonic. When exposed to this hypotonic water, the cells on the surface of the eye, particularly the cornea, can absorb water and swell slightly, contributing to blurry vision. This combination of tear film disruption and corneal swelling can result in swimmer’s eye, or chemical conjunctivitis.
Recognizing the Symptoms
Beyond blurry vision, chlorinated pool water can lead to several common eye symptoms. Many individuals experience redness, which occurs as the blood vessels in the eye become irritated. A stinging or burning sensation is also frequently reported, along with itching.
Some people might describe a gritty feeling in their eyes, as if something is present on the surface. Increased sensitivity to light is another symptom that can arise after swimming in treated water. These symptoms are typically mild and resolve within a few hours to a day or two.
Preventing and Relieving Eye Irritation
Protecting your eyes while swimming can reduce irritation and blurry vision. Wearing well-fitting, leak-proof swimming goggles is an effective way to create a barrier between your eyes and the pool water, preventing chemicals from making contact. Rinsing your eyes with fresh water immediately after swimming can help wash away lingering chlorine or chloramines.
Using lubricating eye drops, also known as artificial tears, before and after swimming can help maintain the tear film and rehydrate the eye’s surface. If blurry vision or irritation occurs, blinking frequently can help redistribute the tear film. Resting your eyes and applying a cool compress can also provide relief. It is advisable to avoid using “get the red out” eye drops, as these can sometimes worsen dryness or lead to increased redness over time.
When to Consult a Doctor
While blurry vision and eye irritation from pool water are usually temporary, there are situations where medical attention may be appropriate. If symptoms such as severe pain, persistent redness, or vision changes do not improve within a day or two, it is recommended to consult an eye care professional.
Other signs that warrant a doctor’s visit include discharge from the eye or increased sensitivity to light that lasts beyond the typical recovery period. These persistent or worsening symptoms could indicate a more significant issue, such as an infection, requiring professional evaluation.