Protect your eye surface from the dry environment

13 November 2025

The ocular surface —which includes the cornea, conjunctiva, and tear film— acts as an essential protective barrier to maintain clear and comfortable vision. However, environmental factors such as air conditioning, heating, wind, or prolonged screen exposure can disrupt the natural tear balance and cause dry eye.

How a dry environment affects your eyes

When the air has low humidity, tears evaporate more quickly. This leads to symptoms such as:

• A gritty or foreign body sensation

• Eye redness

• Itching or burning

• Temporary blurred vision

• Discomfort when wearing contact lenses

Over time, if left uncorrected, dryness can damage the ocular surface and affect visual quality.

Factors that increase dryness

In addition to environmental conditions, certain situations can make the problem worse:

• Spending long hours in front of digital screens (which reduces blinking).

• Staying in closed spaces with air conditioning.

• Exposure to wind or smoke.

• Wearing contact lenses without proper lubrication.

• Certain medications or medical conditions that reduce tear production.

Tips to protect your ocular surface

• Stay hydrated: drinking enough water supports natural tear production.

• Use artificial tears: they help keep the ocular surface lubricated and comfortable.

• Blink frequently: especially when using computers or smartphones.

• Adjust your environment: use humidifiers or avoid direct air flow toward your face.

• Protect your eyes outdoors: wear wraparound sunglasses to reduce exposure to wind and dust.

• See an ophthalmologist: if discomfort persists, it’s important to get an evaluation to identify the cause and proper treatment.