Blue Light ; Why You Need To Drop Your Phone After Sunset.

Blue light

Smart phones, laptops, and other handheld devices all transmit light. However, the blue light in particular may be toxic for your eyes.

Retinal, which is produced by the eye, is triggered by blue light and causes various chemical reactions. These reactions within the eye can be poisonous to the photoreceptor cell molecules rendering them damaged.

The function of the photoreceptor cells is to capture visual images and signal them to the brainBlue light using the molecule called retinal and when these photoreceptor cells die, there’s no regeneration.

Macular degeneration is the result of photoreceptor cell death in the retina which we all know its an eye defect that is more likely to occur after age 60, However, However, it may come sooner with the increased use of blue light technologies.

Blue light appears to damage retinal cells. It is still unclear how much light and for how long it’s necessary to damage these sight-seeing cells but what we do know its that the damage is irreversible.

Protecting yourself may seem as easy as avoiding blue light — but it may not be that straightforward because not only does blue light come from our digital devices, it also comes from natural sunlight.

Also, certain situations such as using your technology at night can intensify the  light as well. Transmitted blue light, especially in the dark, channels the light into a very small area inside of your eye.

The blue light from these screened devices can also lead to dry eyes.

Studies have found that with the increased usage of smart phones, iPads, and laptops, there has been an increase in the development of dry eyes due to a decreased blink rate


Over time, the more someone engages with their devices the less they blink.This in effect causes the tears to evaporate faster, leaving the cornea to dry out.

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To help fight this phenomenon, several technology companies have already created potential solutions.

Apple currently offers the “night shift” setting and Samsung offers a “blue light filter” to decrease the amount of blue light that’s displayed on the screen of the device.

You should “consider decreasing your time on these devices” and to “give your eyes a rest if performing extensive tasks on the computer.”

Also, closing one’s eyes for a short time or gazing into the distance to help relax the muscle of the eye and reduce unnecessary strain.

Although this study is good information for those who are at risk of degenerative eye conditions, it’s yet another reason for everyone else to consider limiting their exposure to the screens — especially after sunset.

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