What causes eye strain? A deep dive into the causes and how to prevent overuse.

Eye strain is a common problem in daily life. Especially in an era where we use electronic devices continuously. Whether it's working in front of the computer Using a smartphone or reading for a long time When the eyes work too hard Warning signs will begin to show through symptoms of eye fatigue that interferes with daily life. Let's understand the causes of eye strain and how to prevent your eyes from being overworked.

What is eye strain (asthenopia)?

Eye strain, or asthenopia in medical terms, is a group of symptoms caused by excessive use of the eyes or exposure to unsuitable environments. This results in strain on the eye muscles and fatigue. While not a life-threatening condition that can lead to blindness, it significantly impacts quality of life and work performance. Eye strain can affect people of all ages, but it is most common in those who use their eyes extensively and continuously, such as computer workers, students, or those who read for long periods.

What are the symptoms of eye strain?

Eye strain manifests in various ways and varies from person to person. Common basic symptoms include burning, itching, watery eyes, dry eyes, blurred vision, eye pain, and headaches. Some people may experience sensitivity to bright light or need to squint to see clearly. Additionally, there may be blurred vision, double vision, or a feeling of a foreign object in the eye. These symptoms may appear after short periods of use or may gradually worsen with prolonged use.

What causes eye strain?

Eye strain isn't caused by a single factor; several contribute, including eye usage habits, environmental conditions, and refractive errors. Understanding the causes helps us prevent and address the problem effectively. Let's look at some of the causes.

Prolonged use of the eyes.

Prolonged, continuous use of your eyes without resting them, especially staring at digital screens such as computers, smartphones, tablets, or televisions, emits blue light that can damage the retina. Looking at the same distance for extended periods also strains the eye muscles, leading to eye fatigue. Furthermore, when we focus on a screen, we tend to blink three times less than usual, resulting in dry eyes and irritation.

Using your eyes in the dark.

Reading books or using electronic devices in insufficient lighting forces the eyes to work harder to adjust focus and capture images, leading to eye muscle strain and fatigue. Furthermore, uneven lighting or bright screen light in a dark room further harms the eyes because the pupils have to adjust their size rapidly and continuously. Preferring to read under low light or use a phone in a dark room before bed are habits that quickly contribute to eye strain.

abnormal vision

Uncorrected refractive errors, such as nearsightedness, farsightedness, astigmatism, or other vision problems, are a major cause of eye strain. When we have vision problems but don't wear the correct glasses or contact lenses, our eyes have to work harder to focus and see clearly, leading to eye muscle fatigue. Furthermore, even with glasses or contact lenses, if the prescription isn't accurate, eye strain can still occur.

Eye diseases

Various eye conditions can easily lead to eye strain. For example, dry eye disease, caused by insufficient tear production or poor tear quality, leads to dryness and irritation. Conjunctivitis causes itching, burning, and redness of the eyes. Glaucoma, cataracts, or retinal abnormalities can also contribute to eye strain. Individuals with these conditions should receive close monitoring from an ophthalmologist and may need treatment to address the specific problem.

Driving long distances by car.

While driving, your eyes are constantly focused on the road and surroundings. You frequently adjust your focus between near and far objects and are exposed to glare from other vehicles' headlights and road reflections. Furthermore, stress and fatigue from long-distance driving also affect eye function. Those who drive long distances should take periodic breaks by pulling over and closing their eyes for 5-10 minutes every two hours to reduce eye strain.

Preventing eye strain.

Preventing eye strain isn't difficult if we know how to care for and use our eyes correctly. Adjusting our eye usage habits and creating a suitable environment can effectively reduce the risk of eye strain. Let's look at some ways to prevent it and keep our eyes healthy and free from excessive fatigue.

Take a break for your eyes.

A recommended rule is the 20-20-20 rule: for every 20 minutes of intense screen time or visual work, take a 20-second break by looking at an object at least 20 feet (approximately 6 meters) away. This helps relax the eye muscles and prevents constant focusing on the same object. Additionally, gently massaging the area around the eyes or applying a warm compress can also effectively reduce eye strain.

Blink frequently.

Blinking is a natural mechanism that helps distribute tears across the surface of the eye, keeping it moist and preventing dry eyes. When we concentrate on screens or tasks that require extensive visual focus, we tend to blink less often than usual, leading to dry eyes and irritation. Practicing frequent, conscious blinking, especially while using a computer or smartphone, can help alleviate the symptoms. Additionally, using artificial tears to keep the eyes moist is another effective way to prevent dryness.

Getting enough sleep

Getting enough sleep is crucial for eye health. During sleep, the eyes rest and regenerate, reducing fatigue and irritation. Adults should aim for at least 7-8 hours of sleep per night to allow their eyes ample rest. Insufficient sleep not only leads to eye strain but can also result in dark circles, puffy eyes, and other eye health problems. Therefore, maintaining good sleep quality and getting enough sleep is an essential preventative measure.

Drink enough water.

When the body is dehydrated, tear production may decrease, leading to dry eyes and irritation. You should drink at least eight glasses of water a day, or about two liters, to stay adequately hydrated. Additionally, you should avoid beverages high in caffeine and alcohol, as these can further dehydrate the body and worsen dry eye symptoms.

Article Summary

Eye strain is a common problem in daily life, but it can be prevented and alleviated by modifying eye usage habits and practicing proper eye care. This includes taking frequent breaks, blinking often, getting enough sleep, and drinking sufficient water. For those with weak eye muscles or seeking eye surgery, consult the expert ophthalmologists at Sky Clinic. They specialize in double eyelid surgery, epicanthoplasty, correction of weak eye muscles, concealed incisions under the eyebrow, and removal of under-eye fat bags, to receive treatment tailored to your specific needs.