New Delhi

As winter smog rises and the air turns toxic in many Indian cities, something as routine as wearing contact lenses can become a silent threat to eye health.

Tiny pollutants including PM2.5, dust, smoke, and chemical particles can stick to lenses, destabilize the tear film, and trap harmful bacteria on the cornea. This increases the risk of a range of complications such as microbial keratitis, dry eye syndrome, and even corneal ulcers.

In metro cities like Delhi, Mumbai, and Bengaluru, where air quality regularly reaches hazardous levels, contact lens users frequently report symptoms like constant irritation, burning sensation, and blurry vision. Eye specialists say that being aware and adopting preventive habits can help protect one’s vision during high-pollution months.

“Contact lenses rest directly on the eye, creating a space where pollutants can accumulate,” explains Dr. V. Sreekumar, Professor of Ophthalmology at Regional Eye Hospital & Kakatiya Medical College, Warangal. “Poor air quality affects tear stability and increases dryness. In severe pollution, I often recommend shifting to spectacles temporarily to avoid long-term damage.”

He emphasizes that regular eye examinations especially twice a year during winter pollution peaks are essential to monitor corneal health.

What You Should Do to Protect Your Eyes

Choose daily disposable lenses

These help avoid the buildup of pollutants and microbes since they are discarded after each use.

Clean lenses properly and frequently

Always use a fresh, sterile cleaning solution never tap water or saliva. If exposed to heavy pollution outdoors, clean mid-day as well.

Wear protective eyewear outdoors

Sunglasses or wraparound glasses protect the eyes from dust and wind while wearing lenses.

Use preservative-free lubricating drops

Hydrating drops help remove irritants and restore natural moisture. Blink often to keep the eyes comfortable.

Maintain good indoor hygiene

Use a humidifier to avoid dry air and always handle lenses with freshly washed hands. Keep the lens case clean and dry.

Stay hydrated and reduce screen strain

Drinking enough water and following the 20-20-20 rule reduces dryness and eye fatigue.

Practices to Avoid During High Pollution

Avoid lenses when AQI crosses 200

Switch to spectacles during severe smog to reduce the risk of corneal infections.

Do not sleep with contact lenses

Polluted lenses overnight can cause serious bacterial infections.

Don’t reuse or “top-up” solutions

Always replace lens solution fully to prevent contamination.

Avoid rubbing your eyes

This pushes harmful particles deeper; rinse instead with sterile saline.

Skip heavy eye makeup and swimming

Cosmetics and contaminated water can interact with lenses and increase infection risk.

Never ignore discomfort

Redness, pain, light sensitivity, or sudden blurred vision require immediate medical attention.

Additionally, Dr. Sreekumar recommends including omega-3 rich foods like walnuts and fish in the diet to combat inflammation and support healthy tears. A yearly slit-lamp examination can help detect early corneal changes before they escalate.

Stay Aware, Stay Safe

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Keeping an eye on changing AQI levels and adjusting lens-wearing habits accordingly can significantly safeguard vision. Simple precautions, practiced regularly, can prevent minor irritation from turning into a major health issue.