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Seeing Blue:

The Impact of Excessive Blue Light Exposure

In today’s digital era, exposure to blue light has become unavoidable. From smartphones and computers to LED lighting, blue light is emitted by nearly all modern electronic devices. While some exposure to natural blue light from the sun is beneficial for regulating sleep cycles and boosting alertness, excessive artificial blue light exposure can have negative consequences on eye health and overall well-being.

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THE SCIENCE BEHIND BLUE LIGHT 

Blue light is part of the visible light spectrum with short wavelengths and high energy. Unlike other light types, blue light penetrates deeper into the eye, reaching the retina directly. Research indicates that prolonged exposure to blue light, especially from screens, may lead to digital eye strain, retinal damage, and even long-term vision issues.

How Blue Light Affects Eye Health?

​​​One of the most immediate effects of blue light exposure is digital eye strain, also known as Computer Vision Syndrome (CVS). Symptoms include:

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 Dry & Irritated Eyes 

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 Blurred Vision 

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 Headache 

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 Lose Focus 

Extended exposure can also contribute to retinal cell damage, potentially increasing the risk of macular degeneration over time. Blue light disrupts the production of melatonin, the hormone responsible for regulating sleep, leading to poor sleep quality and increased fatigue.

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PROTECTING YOUR EYES FROM BLUE LIGHT

While completely avoiding blue light is impossible, several measures can be taken to minimize its harmful effects:

01

USE BLUE LIGHT BLOCKING LENSES

Specially designed lenses, such as Blutech Lenses, help filter high-energy blue light, reducing strain and improving visual comfort.

02

FOLLOW THE

20-20-20 RULE

Every 20 minutes, take a 20 second break and focus on something 20 feet away to reduce eye strain. 

03

ADJUST SCREEN SETTINGS

Lowering screen brightness and enabling night mode or blue light filters can reduce exposure.

04

INCREASE BLINK RATE

Blinking more frequently helps maintain moisture in the eyes and reduces dryness.

05

MAINTAIN PROPER LIGHTING

Using ambient lighting that reduces glare and contrast strain can ease the impact of blue light. 

While blue light is an essential part of our environment, excessive artificial exposure can negatively impact vision, sleep, and overall health. By implementing protective measures such as using blue light-blocking lenses and following healthy screen habits, individuals can safeguard their eye health and improve daily comfort. Awareness and proactive eye care are key to mitigating the adverse effects of blue light in our digital world.

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Safety at Home

  • Use a blue light blocker covering for all your computer/laptop/tablet screens including cell phones.

  • Use blue-blocking glasses when you are working on the computer. (This does not protect the skin) 

  • Some people will use a blue light blocker (which is a thin film that sits unnoticeable over the screen) and then also a 100% blue blocker of hard thick plastic at night. However, be aware that many of the thinner unnoticeable blue light coverings on the market do not protect 100% blue light.

  • Download a program (like Iris) onto your device that will automatically reduce blue light at night. 

Research Studies on Blue Light

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