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How Screen Time Is Damaging Your Tear Film: Dry Eye in the Digital Age

  • Writer: Dr. Joy Lam, O.D.
    Dr. Joy Lam, O.D.
  • Aug 11
  • 4 min read

These days, our lives revolve around screens, phones, laptops, tablets and TV's. They help us stay connected but are silently altering our eyes' functions.


Tired man at a glass desk rubs his eye, holding glasses beside a laptop and notebook in a bright room.

Most people suffer from blurriness, dryness and irritation to the eyes. Dry eyes from screens often worsen at the end of the day. Most people do not realize that excessive screen use is a major cause of dry eyes.


This condition is closely associated with digital eye strain or computer vision syndrome. It is becoming more common in all age groups.


We are seeing a lot of patients at Refine Dry Eye Center who have symptoms that are caused by too much time on the screen. They think that it is fatigue. In fact, it's often an issue with the tear film that is responsible for keeping your eyes comfortable and clear.


Dry Eye Caused by Screens

Dry Eye associated with screen time is due to the use of digital devices for a long duration. These devices affect the natural stability of the tear film. Your tears are not just water—they are three layers of oil, water and mucus. The oil layer is crucial as it stops tears evaporating too fast.


This balance is disrupted when screen time is increased, causing tears to dry more quickly and causing unstable vision.


What Does the Screen Do to Your Tear Film?


Decrease Blinking Rate

Your blink rate decreases greatly when you concentrate on something that you're looking at on a screen. Blinking helps to distribute tears across the eye in a normal manner. Less blinking will cause the tear film to become uneven and unstable.


Incomplete Blinking

Many people don't close their eyes completely when using screens. This causes less oil to reach the surface of the eye from the meibomian glands. This results in dry eyes.


Extended Focus Time

Extended periods of screen time, especially without breaks, decreases natural eye recovery time. This makes it easier for tears to evaporate and makes it more uncomfortable throughout the day.


High Energy Blue Light

The light from devices can cause eye strain and interfere with the eyes' ability to produce sufficient quality tear film.


Common Symptoms of Digital Eye Strain

Dry eyes caused by screens does not necessarily have the same symptoms for all. The most frequent symptoms are:

  • Burning, stinging feeling

  • Dry, gritty sensation in the eye(s)

  • Blurred vision that clears up with blinking

  • Computer vision syndrome (CVS)

  • Headaches around the eyes

  • Sensitivity to light

  • Watery eyes


If these symptoms continue to get worse during or after screen time, it's possible that your tear film is already compromised.


How to Keep Your Eyes Safe in a Digital World

While there is no way to completely escape from the screens, you can take a few small measures to safeguard your eyes:


Follow the 20-20-20 Rule

Every 20 minutes, look at an object at least 20 feet away for 20 seconds to prompt blinking and relax eyes.


Learn to Blink Completely

Try to blink fully, particularly while working intently.


Change the Screen Position

Position screens slightly below eye level to help prevent tear evaporation.


Take Short Breaks

Take a break from electronic devices every hour to give your eyes a natural break.


Use Artificial Tears

Over the counter lubricating drops help to maintain moisture levels and reduce the dryness.


Woman in white pajamas puts in eye drops on a bed with a laptop in a bright, white bedroom

When to Seek Professional Help

Even after changing lifestyle and using artificial tears you still feel dryness, irritation and blurred vision, this could be due to screen-related dry eye or computer vision syndrome. This should be properly evaluated by an ophthalmologist or optometrist.


Woman adjusts a man's eye in a dark studio, surrounded by CRT monitors showing an eye and a loading icon.

It is important to diagnose early to prevent chronic tear film damage and improve treatment outcomes.


Refine Dry Eye Center of Silicon Valley proudly serves patients not only in Sunnyvale, Mountain View, Cupertino, and Santa Clara, but also in nearby cities such as Saratoga, Campbell, and Fremont.


Advanced Dry Eye Care at Refine Dry Eye Center

At Refine Dry Eye Center, we focus on assessing the underlying cause of dry eye, instead of simply treating the symptoms. Our approach includes in-depth tear film analysis and tailored treatment options to get your eyes feeling better for the long term.


The symptoms may be due to the use of screens, gland dysfunction, or environmental stress but we want to give you lasting relief, not just a quick fix.


Frequently Asked Questions (FAQs)

What is screen related dry eye?

It is a disease in which excessive screen time disrupts the tear film stability, resulting in dryness, irritation and blurred vision.

Generally, it is not permanent and if left untreated can lead to long-term tear instability.

Due to less blinking, tears evaporate more rapidly than usual.

While eye strain is part of computer vision syndrome, dry eye is one of the most common parts.

They only temporarily relieve the symptoms and not the problem of the blinking and tear film.

If symptoms are still present after decreasing screen time or the use of eye drops, a professional eye examination is recommended.

Schedule a dry eye exam today and take the first step toward clearer, more comfortable vision.


Are you experiencing dry eye symptoms such as irritation, redness, or blurred vision?

Schedule a consultation today at Refine Dry Eye Center. Our team will ensure you receive the personalized care needed to improve your comfort and preserve your eye health.

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