How blue light accelerates blindness?

How blue light accelerates blindness? The blue light, emitted from digital devices damages the eye’s retina and which, in turn, may accelerate blindness. This happens because blue light transforms vital molecules in the eye’s retina into cell killers. 

How blue light accelerates blindness?

How blue light accelerates blindness?

According to the scientific reports, the blue light that shines from phones and other digital devices causes a “toxic” reaction in the eye’s retina. When the blue light hits the molecule retinal, the retinal, in turn, generates poisonous molecules that kill the very important photoreceptor cells. Those cells are needed to sense light and signal the brain; when they’re dead, it leads to macular degeneration, a prime cause of blindness.

What is the blue light?

Light is made up of electromagnetic particles that travel in waves.  These waves emit energy and range in length and strength. The shorter the wavelength, the higher the energy. Sunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see. Each of these has a different energy and wavelength.

Rays on the red end have longer wavelengths and less energy. On the other end, blue light has a very short wavelength, and so produces a higher amount of energy. The light that looks white can have a large blue component, which can expose the eye to a higher amount of wavelength from the blue end of the spectrum.

Where are you exposed to blue light?

The largest source of blue light is sunlight. In addition, there are many other sources

# Electronic devices

# Digital screens – Computer monitors, laptops, smartphones, and tablet screens

# Flat screen LED televisions

# Fluorescent light

# CFL (compact fluorescent light) bulbs

# LED light

The blue light exposure you receive from screens is small compared to the amount of exposure from the sun. And yet, there is concern over the long-term effects of screen exposure because of the close proximity of the screens and the length of time spent looking at them. According to a recent NEI-funded study, children’s eyes absorb more blue light than adults from digital device screens.

How blue light accelerates blindness? Most of us spend the majority of our waking hours staring at a digital screen. Studies suggest that 60% of people spend more than 6 hours a day in front of a digital device.

What are the benefits of blue light?

# Blue light is needed for good health:

# It boosts alertness, helps memory and cognitive function and elevates mood.

# It regulates circadian rhythm – the body’s natural wake and sleep cycle. Exposure to blue light during daytime hours helps maintain a healthful circadian rhythm.

What are the adverse effects of blue light exposure on our health?

How blue light accelerates blindness?

# Chronic exposure to blue light at night can lower the production of melatonin, the hormone that regulates sleep, and disrupts your circadian rhythm.

# Continued exposure to blue light over time could lead to damaged retinal cells. This can cause vision problems like age-related macular degeneration, permanent eye damage, dry eyes.

# Working the night shift and exposure to blue light at night to several types of cancer (breast, prostate) diabetes, heart disease, obesity and an increased risk for depression.

How to protect your eyes from blue light?

There are a few ways to decrease the effect of constant exposure to blue light from digital devices

# Blue-light filters: For starters, apply blue-light filters to all your digital devices including the very frequently used smartphones and laptops, there are tons of apps available for the same.  

# Computer glasses: Computer glasses with yellow-tinted lenses that block blue light can help ease computer digital eye strain by increasing contrast.

# Anti-reflective lenses: Anti-reflective lenses reduce glare and increase contrast and also block blue light from the sun and digital devices.

# Screen time: Try to decrease the amount of time spent in front of these screens and/or take frequent breaks to give your eyes a rest.

# Filters: Screen filters are available for smartphones, tablets, and computer screens. They decrease the amount of blue light given off from these devices that could reach the retina in our eyes.

# Do not use your smartphone or tablet in the dark. Make a simple no phones on the bed at night rule, or if you can, go a step ahead and ban all digital devices from your bedroom altogether. 


How blue light accelerates blindness? Digital eyestrain is a new term used to describe the conditions resulting from the use of today’s popular electronic gadgets. Symptoms of digital eyestrain, or computer vision syndrome, include blurry vision, difficulty focusing, dry and irritated eyes, headaches, neck and back pain. 

Digital eyestrain does not just affect adults. Children are also at risk for eyestrain due to their growing use of digital devices. Spending just two consecutive hours on a digital device can cause eyestrain and fatigue. Now that you know how much harm this little device can cause, it is ideal to follow these advises, especially when your eyesight is at stake. 

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