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blue light

Blocking Harmful Blue Light

86% of the average American’s free time is spent looking at a screen

Americans Are Attached To Their Screens

The average adult is spending more time each day looking at a screen than ever:

  • 2014: 7.4 hours
  • 2015: 9.65 hours
  • 2016: 10.65 hours

Kids Can’t Look Away Either

  • 76.5% of parents report their kids spend more than 2 hours in front of a screen each day
  • 78.3% of parents are concerned about the impact of digital devices on their kid(s)
  • But only 29.1% take their kid(s) in for an annual eye exam

According to a study by The Vision Council, more than two hours of screen exposure caused problems like:

  • Eye strain
  • Neck and shoulder pain
  • Headache
  • Blurred vision
  • Dry eyes

1/3 of All Visible Light is Blue Light

Blue light is made up of shorter wavelengths that emit a higher energy levels than other visible light

Sources Of Blue Light

  • Screens on electronic devices
  • Fluorescent and some LED lighting
  • The Sun

Chronic Problems Linked to Overexposure to High Energy Blue Light

  • Macular Degeneration - Harmful Blue Light penetrates the macular pigment and harms the retina
  • Cataracts - UV light is absorbed by the lens, causing cloudiness
  • Pterygium - UV light causes a tissue growth to form on the cornea

Blue Light Can Disrupt Sleep

Our bodies are hardwired to respond to blue light:

  • Heightens alertness
  • Improves mood and sense of well being
  • Boosts reaction times

Exposure to blue light within an hour of going to sleep can interrupt your sleep cycle by making you more alert More than 80% of Americans look at screens within an hour of going to bed

Flickers Create Harmful Glares

  • Higher energy light tends to flicker more easily, causing glares
  • Glares cause your eyes to fight harder to see
  • Suspected cause of many digital eye strain symptoms

From 2000 to 2012 there was a 25% increase in the number of Americans that were 50+ and had late stage macular degeneration— what can we do to protect our vision?

Tips To Preserve Your Vision

Limit Screen Time Early On

  • 0 - 18 months: no screens except occasional video chats with loved ones
  • 18 months - 2 years: monitored time with quality programming
  • 2 years - 5 years: 1 hour max. of quality programming
  • 5 years+: spend time on screens according to parental guidance

Helpful Habits

  • Use the 20-20-20 rule: Look at something 20 feet away for 20 seconds every 20 minutes. Allows eyes to relax
  • Remember to blink frequently. Not blinking enough can cause dry eye. Putting a post-it note on your computer can remind you to blink
  • Adjust lighting properly. Overhead lighting causes screen glare
  • Make sure the brightness of your screen is adjusted to match the lighting of your surroundings


  • Anti-Glare Screens and Protectors- Eliminates glare so your eyes don’t work as hard
  • Blue Light Filter and Apps Changes the coloring of your screen so that there is less harmful blue light
  • Adjust lighting properly. Overhead lighting causes screen glare
  • Glasses with Digital Light Protection: Filters out at least 20% of blue light and helps prevent glare

Keep your vision in top condition by protecting your eyes from high energy blue light!



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Also see: Computer Glasses, Gunnar Prescription Computer Eyewear, Prescription Lens Guide
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