Our eyes are directly exposed to the environment. Wind, temperature changes, dry air, UV rays, pollen, smoke and airborne pollutants can all affect eye comfort. Depending on the season, weather and air quality, some people may experience increased dryness, stinging, redness or itching.
Understanding these effects can help you adopt simple habits to protect your eyes every day.
Dry, hot or windy conditions
Dry air, heat and wind can cause tears to evaporate more quickly. The tear film forms an essential protective layer over the surface of the eye. When it becomes unstable, the eyes may feel dry, irritated or sensitive. Temporary blurred vision and a gritty sensation may also occur.
Air conditioning can make these symptoms worse, particularly when airflow is directed toward the face. Contact lenses may also become less comfortable under these conditions.
Cold weather and indoor heating
During winter, cold outdoor air generally contains less moisture. Indoors, heating systems can make the air even drier. This combination may contribute to dry eye symptoms, including burning and eye fatigue.
Cold wind can also make the eyes water. This tearing may be the eye’s natural response to irritation or to tears evaporating too quickly.
UV exposure
Ultraviolet rays are present throughout the year, even on cloudy days. Repeated and excessive exposure may contribute over time to the development of certain eye conditions, including cataracts. Snow, water and sand can reflect UV rays and increase the eyes’ exposure.
Sunglasses that provide complete UVA and UVB protection are therefore important in every season. A close-fitting or wraparound frame can offer additional protection from rays entering around the sides.
Seasonal allergies
Changes in climate can affect the length and intensity of pollen seasons. During spring and fall, pollen, mould and other allergens may trigger a reaction on the surface of the eyes.
Common symptoms of eye allergies include:
- Itching;
- Redness;
- Excessive tearing;
- Swollen eyelids;
- Burning or irritation.
Avoid rubbing your eyes, as this can make the inflammation worse.
Air pollution and smoke
Outdoor air pollution may contain fine particles, ozone, nitrogen dioxide and other irritants. Smoke from wildfires, cigarettes or wood-burning appliances can also affect the eyes.
Because the ocular surface is directly exposed to the air, these contaminants may cause stinging, redness, watering or increased dry eye symptoms. Indoor pollution can also contribute, particularly when smoke, cleaning products, scented products or poor ventilation are present.
How can you protect your eyes?
A few simple measures can help reduce the effects of environmental conditions:
- Check the air quality index and limit outdoor activities when pollution or smoke levels are high.
- Wear sunglasses that provide complete UVA and UVB protection.
- Choose wraparound eyewear on particularly windy days.
- Avoid directing air conditioning or heating vents toward your face.
- Use a humidifier when indoor air is very dry.
- Keep windows closed during periods of high pollen or wildfire smoke.
- Take regular screen breaks and remember to blink.
- Ask an eye care professional for advice before using eye drops, especially if symptoms persist.
- Follow all care and replacement instructions for contact lenses.
When should you consult an eye care professional?
Occasional irritation may improve once exposure to the environmental trigger has been reduced. However, an eye exam is recommended when symptoms persist, occur frequently or interfere with comfort or vision.
Significant pain, strong sensitivity to light, a sudden change in vision, unusual discharge or intense redness should be assessed promptly.
Climate and pollution are part of our daily environment, but their effects on the eyes should not be overlooked. Your IRIS eye care professional can assess your ocular health, identify the cause of your symptoms and recommend solutions suited to your environment and lifestyle.
