Must-Know! The Effects of Blue Light from Gadgets on Health

Without realizing it, we are exposed to blue light every day from the screens of our smartphones, laptops, computers, and televisions.

What is blue light? According to alodokter.com, blue light is a type of light spectrum classified as high-energy visible light (HEVL) that can cause eye problems if exposed to it excessively.

Blue light can come from various sources, one of which is the gadgets we use daily.

However, the largest natural source of blue light remains sunlight.

Exposure to blue light from gadgets has a smaller immediate effect than sunlight, but the long-term effects it causes are very dangerous to health, especially for the eyes and skin.

Excessive exposure to blue light can disrupt nighttime sleep, making it difficult to fall asleep. Sleep schedules can become disrupted, thereby affecting daily productivity.

When excessive blue light is emitted, it causes a decrease in the production of the hormone melatonin, which regulates the sleep cycle.

Normally, the body produces less melatonin during the day, and production increases until it peaks at midnight.

The Dangers of Blue Light to Eye Health

Exposure to large amounts of blue light can increase the risk of eye diseases. Here are 4 eye diseases that can be caused by blue light:

1. Eye Irritation and Eye Strain

Spending too much time staring at a screen can cause symptoms such as dry eyes, eye strain, blurred vision, and headaches.

In this digital age, everyone relies on digital devices for productivity and convenience, such as smartphones and laptops.

Despite the benefits, this habit exposes you to excessive blue light, causing your eyes to tire easily. Additionally, it can lead to sleep difficulties, disrupting the quality of sleep essential for good health.

Avoid excessive use of digital devices to allow your eyes to rest.

Neck pain may also occur because muscles stiffen when staring at a gadget screen for too long. This condition is certainly very detrimental to health.

2. Cataracts

A cataract is a condition where the eye becomes cloudy, characterized by a white film covering the lens, which impairs vision.

One cause of cataracts is excessive exposure of the eyes to blue light. However, this condition is rare.

Normally, the eye’s lens has the ability to filter short-wavelength light to protect the retina from the dangers of blue light.

However, significant exposure to blue light can cause a decline in the lens’s function.

Therefore, instead of protecting the retina, the lens undergoes a color change, becoming cloudy—a condition known as a cataract.

3. Refractive Errors

Refractive errors are conditions in which the eye’s ability to focus incoming light on the retina is abnormal.

Symptoms of refractive errors may include blurred vision at certain distances, frequently squinting when looking at objects, headaches, or eye strain,

Vision problems associated with refractive errors include nearsightedness (myopia), farsightedness (hyperopia), presbyopia, and astigmatism.

4. Retinal Damage

When blue light enters the eye but the eye lacks sufficient protection, it can damage the retina.

Blue light itself is the most dangerous type of light for the retina. Once blue light penetrates the outer layer of the eye, it travels to the retina and can cause long-term damage.

This condition can increase the risk of macular degeneration, glaucoma, and degenerative retinal diseases.

The Dangers of Blue Light to Skin Health

Exposure to large amounts of blue light can increase the risk of eye diseases. Here are 4 eye diseases that can be caused by blue light:

1. Accelerates the Aging Process

Prolonged exposure to blue light can damage skin cells and trigger premature aging and an increase in wrinkles.

This occurs because long-term exposure to blue light can accelerate the breakdown of collagen and elastin, which are essential for maintaining skin elasticity.

Furthermore, excessive exposure to blue light can also cause hyperpigmentation of the skin.

2. Skin Pigment Changes

Not only that, but excessive exposure to blue light can also cause hyperpigmentation of the skin.

Hyperpigmentation is a condition in which areas of the face become darker than the natural skin tone due to excessive production of melanin (skin pigment).

Hyperpigmentation often manifests as brown patches, dark spots, grayish patches, or black spots that are neither painful nor itchy.

This condition can also be caused by sun exposure, acne inflammation, hormones, and medications.

How to Prevent the Negative Effects of Blue Light

The negative effects of blue light can be prevented by doing the following 5 things:

1. Reduce the amount of time you spend staring at your device screen each day.
2. Use night mode or lower the brightness on your device.
3. Give your eyes a break periodically. When working for long periods in front of a screen, follow the 20-20-20 rule: every 20 minutes, look at an object 6 meters away for 20 seconds.
4. Take care of your skin. Clean your face regularly with skincare products to maintain facial skin hygiene.
5. Eat healthy foods rich in antioxidants, such as vegetables, fruits, and vitamins, to support eye and skin health.

Sources :

• https://www.siloamhospitals.com/informasi-siloam/artikel/bahaya-blue-light
• https://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side
• https://www.halodoc.com/artikel/ini-dampak-blue-light-untuk-kesehatan-mata-dan-kulit
• https://www.alodokter.com/blue-light-ketahui-3-dampaknya-pada-kesehatan-mata