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Home » What's New » The Dangers of Blue Light

The Dangers of Blue Light

Which is more harmful to your eyes UV Rays or Visible Light?

As most of us know, UV light is harmful not only for our skin but for our eyes as well.
 
UV light causes:
• Cancers of ocular adnexa
• Pterygia
• Pinguecula
• Photokeratitis
• Cataracts
 
However, in reality, rarely do any of these lead to blindness in the United States. In fact, the cornea and lens block UV light. Only visible or "blue light" is incident on the retina.
 
You don't have to just take our word for it though, in the May 2013 edition of the Harvard Health Letter and article called "Blue light has a dark side" ran. The article said that, "Light at night is bad for your health, and exposure to blue light emitted by electronics and energy-efficient light bulbs may be especially so."
In fact, exposure to blue light suppresses the secretion of melatonin, our sleep hormone.  At night, blue light throws the body's biological clock—the circadian rhythm—out of whack and our sleep suffers as a result.
 
A plethora of studies reveal links from working the night shift and exposure to blue light to several types of cancer, diabetes, heart disease, and obesity. That's why if you work a night shift or use a lot of electronic devices at night, you should seriously consider wearing blue-blocking glasses.
 
Through technology and well-intentioned, but misguided forms of protection, a public health threat is upon us. So, w?hat are the actual dangers of blue light
 
Blue Light Dangers
 
Going with a best case scenario the dangers are:
  • Difficulty falling asleep
  • Poor productivity at work
  • Poor school performance
At worst, blue light exposure may result in:
  • Obesity
  • Diabetes
  • Depression
  • Cancer
  • Blindness
 
What happens if blue light is filtered properly?
 
1. We Improve our “Daily Vision” By Reducing Blurry Vision 
2. We enhance the visibility of objects by reducing “light scatter”
3. Help Protect Against Progression of the Long Term Disease State (AMD) by filtering light across the (400-500 nm) commensurate with the damage 
4. Unrelated To Vision: We avoid disruption of our “circadian rhythm” and melatonin suppression that has been shown by Harvard Medical to contribute to conditions ranging from Obesity To Cancer.

 
What can you do?
 
Come by our office and we'll be happy to show you the available lenses on the market that block blue light. There are a few companies already producing blue light blocking lenses such as BluTech Lenses, Hoya's Recharge, Essilor's Provencia and Optima's iBluBlock lenses.
 
Dangers of blue light or visible light. More harmful than UV rays.