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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.


COVID-19 has been and continues to be an ongoing trial for all of us. During this unforeseen time, we ask kindly for your understanding and compliance to the CDC guidelines. In order to decrease the chances of contraction, we are allowing only one parent to accompany their child during the examination. We appreciate your patience and understanding.

We also want to inform you of the new additional symptoms of COVID-19 that have been added to the previous symptoms as potential indicators of having COVID-19:

New symptoms:             Congestion/runny nose

Previous symptoms:       Headache
                                            Dry cough
                                            Shortness of breath
                                            Sore throat
                                            Muscle/body aches
                                            New loss of taste or smell

Please be aware that a person does not have to have all of these symptoms but anyone or multiple symptoms can be an indicator of having COVID-19. If you or any family members are experiencing any of the above symptoms, we kindly ask that you reschedule your appointment and contact yourprimary care provider. It is best to reschedule your appointment with us after being symptom-free for14 days.

We at South Coast Optometry truly appreciate each and every one of you as a person and value your trust in us to take care of your most precious eyes. As always, we will continue to closely monitor the COVID-19 situation and communicate any and all changes through our website, Again, we truly appreciate your understanding and support during this unprecedented time and look forward to seeing everyone soon!


Dr. Daniel E. Quon, O.D., and The Entire South Coast Optometry Team!!!


Until further notice, we are only seeing essential care patients. Our hours are:
Monday: 10:00 AM to 7:00PM
Tuesday: Closed
Wednesday: 10:00 AM to 7:00 PM
Thursday: 9:00 AM to 6:00 PM
Friday: 10:00AM to 6:00 PM
Saturday: 9:00 AM to 5:00 PM

We now offer TeleHealth consultations, Call (714) 540-2020 to schedule a time
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