When air pollution levels rise, many people prefer to stay indoors, hoping to protect themselves from the harmful effects of smog. However, despite spending most of the day at home, some may still experience burning, itching, redness, or excessive watering in their eyes.
This is because indoor air is not always free from pollutants. Fine particulate matter, dust, and other airborne irritants can enter homes and affect the delicate surface of the eyes, even when people avoid going outside.
Dr Purendra Bhasin, Ophthalmologist at Ratan Jyoti Netralaya Ophthalmic Institute & Research Centre, Gwalior, explains why smog can cause eye discomfort indoors and what people can do to protect their eye health.
Why Do Your Eyes Burn Even When You Stay Indoors?
Indoor spaces can offer some protection from outdoor pollution, but they cannot completely block it. Pollutants can enter homes through open windows, doors, ventilation systems, and small gaps. These particles may remain suspended in the air or settle on surfaces before becoming airborne again.
“When they come into contact with the eyes, they can irritate the delicate surface of the eye and trigger discomfort,” explains Dr Bhasin.
The eyes are particularly vulnerable because their outer surface is constantly exposed to the surrounding environment. Unlike the skin, they do not have a physical barrier, such as clothing, to protect them from airborne irritants.
How Does Smog Affect Your Eyes?
The tear film is a thin layer of tears that keeps the surface of the eyes moist, smooth, and comfortable. It also acts as the first line of defence against environmental irritants.
According to a study published by the British Journal of Ophthalmology, exposure to air pollution can disturb this protective layer, causing tears to evaporate more quickly. As a result, the eyes may become dry, gritty, itchy, or irritated.
- Pollutants can also trigger inflammation on the ocular surface, leading to redness, excessive watering, and a sensation that something is stuck in the eye.
- People with dry eyes, allergies, or existing eye conditions may experience more severe symptoms during smoggy weather.
- Screen time can make burning eyes worse. People tend to blink less frequently when using mobile phones or computers, which can increase tear evaporation and aggravate dryness.
Can Indoor Fans and Air Conditioning Make It Worse?
Yes, certain indoor conditions may contribute to eye irritation. Fans, air conditioning, and indoor heating can increase tear evaporation or circulate dust and other particles, depending on the environment and how the equipment is used.
This means that the severity of eye discomfort is not determined by outdoor pollution levels alone. Indoor air quality, ventilation, and personal eye health can also influence symptoms.
How to Protect Your Eyes During Smoggy Weather
A few practical measures can help reduce exposure to irritants and relieve discomfort.
- Keep windows closed during severe pollution: Limit the entry of polluted outdoor air when pollution levels are high, while maintaining appropriate ventilation when conditions permit.
- Use an air purifier: A purifier with a high-efficiency particulate air (HEPA) filter can help reduce airborne particles in frequently occupied rooms.
- Avoid rubbing your eyes: Rubbing can increase irritation and potentially damage the eye’s surface.
- Consider lubricating eye drops: Artificial tears may help relieve dryness and discomfort. Consult an eye specialist about the most suitable product, particularly if symptoms recur.
- Take screen breaks: Blink regularly and take breaks from mobile phones and computers to help reduce dryness.
- Reduce indoor dust: Clean surfaces regularly using methods that minimise the disturbance of settled dust.
When Should You See an Eye Specialist?
Occasional mild irritation may improve when exposure to pollutants decreases. However, persistent or worsening symptoms should not be ignored.
Seek an eye examination if you experience persistent redness, eye pain, sensitivity to light, blurred vision, or unusual discharge. These symptoms may indicate an eye condition that requires treatment rather than routine pollution-related irritation.
Staying indoors can reduce exposure to smog, but it does not eliminate the risk completely. Pollutants can enter homes and aggravate dryness and inflammation, causing burning, itching, and watery eyes. Paying attention to indoor air quality, reducing exposure to dust, and avoiding excessive screen time can help protect your eyes during periods of high pollution. If symptoms persist, consult an eye specialist rather than assuming smog is the only cause.
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How to take care of your eyes in pollution?
Wearing sunglasses when outdoors is largely helpful in protecting the eyes from the ill effects of pollution. You can also consult a doctor for eye drops to flush out toxins.
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Which foods purify the lungs?
For lung detoxification, you should consume beetroot, apples, ginger, garlic, turmeric, and berries.
