ENG 
ESP 
The prolonged use of screens—computers, tablets, and mobile phones—has notably increased the incidence of dry eye syndrome or digital eye strain. The decrease in blinking and the environmental conditions associated with working in front of electronic devices promote the evaporation of the tear film, causing discomfort that, if not corrected, can affect quality of life and visual performance.
Why does dry eye increase with screen use?
Decrease in blinking
When we stare at a screen, blinking naturally decreases (from 15–20 to 5–7 times per minute), which causes less tear renewal and, consequently, dryness of the ocular surface.
Environmental conditions
Environments with air conditioning or intense heating, low relative humidity, and direct drafts increase the evaporation of tears, worsening the sensation of grittiness and burning.
Ergonomics and posture
A monitor positioned too high or too low forces you to open your eyelids wider, exposing a larger ocular surface. Additionally, an inadequate distance or glare from reflections increases visual strain.
Symptoms of dry eye syndrome
- Sensation of grit or foreign body when blinking.
- Itching, stinging, or burning persistent.
- Intermittent blurred vision, especially at the end of the day in front of the screen.
- Conjunctival hyperemia and a feeling of eye strain.
- Compensatory tearing, which alternates with intense dryness.
Prevention strategies
- 20-20-20 Rule
Every 20 minutes, look at an object 6 meters away for 20 seconds; this encourages blinking and relaxes focus. - Conscious blinking
Perform series of complete blinks (intense closures and openings) every hour to evenly distribute the tear. - Environmental humidification
Use humidifiers or place containers with water near your workstation to increase the relative humidity. - Visual ergonomics
Adjust the height of the monitor so that the line of sight is between 10° and 20° below the horizontal, reducing the exposed surface of the eye. - Active breaks
When you get up, take the opportunity to stretch your neck, shoulders, and look at objects at different distances. A brief walk can help with eye relaxation.
Treatments and medical options
Artificial tears and tear substitutes
Gels or lubricating eye drops formulated to keep the ocular surface hydrated. They should be selected according to the consistency and frequency of application recommended by your ophthalmologist.
Nutritional supplements
Omega-3 fatty acids, vitamins A and E help improve the quality of the tear film and reduce inflammation of the Meibomian glands.
Clinical procedures
- Lacrimal obstruction with silicone or collagen plugs to reduce tear drainage.
- Intense Pulsed Light (IPL) Therapy in cases of advanced Meibomian gland dysfunction.
- Meibomian gland expression treatments to restore lipid secretion.
When to see an ophthalmologist?
- Severe eye pain or a foreign body sensation that does not improve with over-the-counter lubricants.
- Persistent blurred vision that interferes with work or driving.
- Intense redness or light sensitivity.
- If the symptoms of dryness are accompanied by abnormal secretions or changes in the appearance of the cornea.
The dry eye syndrome in the digital age it is increasingly common, but with preventive habits and appropriate treatments, it is possible to maintain optimal visual health. In Enfoca, our team of ophthalmologists will diagnose your case and offer you a personalized care and treatment plan.
Schedule your evaluation today. and regain the visual comfort you deserve.
