As the blue light from smartphones may accelerate blindness (according to these scientists)

  • As the blue light from smartphones may accelerate blindness (according to these scientists)
    Independent.t. E.
    Scientists say they have found how the blue light from smartphones, laptops and other digital devices damage vision and may accelerate blindness.
    https://www.independent.ie/business/technology/how-blue-light-from-smartphones-can-speed-up-blindness-according-to-these-scientists-37201737.html
    https://www.independent.ie/life/article37003060.ece/6758d/AUTOCROP/h342/2018-06-13_lif_41702508_I2.JPG

  • Email

Scientists say they have found how the blue light from smartphones, laptops and other digital devices damage vision and may accelerate blindness.

Research at the University of Toledo in the USA have shown that prolonged exposure to blue light causes toxic molecules to light sensitive cells of the eye that can cause macular degeneration – an incurable condition that affects the middle part of the vision.

Blue light which has shorter wavelength and more energy than other colors, may gradually cause damage to the eyes.

Dr. Ajith Karunarathne, assistant Professor of chemistry and biochemistry, said: “We are constantly exposed to blue light and the eye cornea and lens can not block or reflect it.

“It’s no secret that blue light damages our vision by damaging the retina.

“Our experiments explain how this happens and we hope it leads to treatments that slow down the macular degeneration, such as a new form of eye drops.”

Macular degeneration, which affects around 2.4% of the adult population in the UK, is a common condition among those in the 50-ies and 60-ies, which leads to significant loss of vision.

This is caused by the loss of photoreceptors, light-sensing cells, i.e., in the retina.

Age-related macular degeneration (AMD) is the leading cause of blindness in the United States and while it does not cause total blindness, AMD may make everyday activities, such as reading and recognizing faces difficult.

Photoreceptor cells need a molecule called retinal in the sense of light and trigger alarm to the brain that allow us to see.

The researchers found that exposure to blue light causes retinal to establish a chain of reactions that leads to toxic chemical molecules that will be generated in the photoreceptor cells.

Kasun ratnayake, a graduate student at the University of Toledo who was involved in the research, said: “If you Shine blue light on the retina, the retina kills the photoreceptor cells as signaling molecules on the membrane dissolves.

“The photoreceptor cells are not restored in the eye. When they’re dead, they’re dead forever.”

The researchers found that the introduction of the retina molecules on other cell types in the body, such as cancer cells, heart cells and neurons, caused them die when exposed to blue light.

They also noticed that the blue light alone or without retinal blue light has no effect on the cells.

Dr Karunarathne said: “on the retina automatically the toxicity of blue light universal. He can kill any type of cells.”

Scientists have discovered that a molecule called alpha-tocopherol, a natural antioxidant found in eye and body, stop cells from death, but cannot offer any protection for the elderly or those whose immune system is suppressed.

Dr Karunarathne said, “that’s when the real damage”.

For those who want to protect their eyes from blue light, Dr. Karunarathne advised to wear sunglasses that can filter UV and blue light on the outside and avoiding viewing on mobile phones or tablets in the dark.

The results of the study were published in the journal scientific reports.

Online Business Classes