Blog Hero

How do digital devices affect vision in children?

Book Appointment

Children are using digital devices more than ever.  Blue light from everyday devices may cause eye strain, headaches, and behavior problems in children. 

Why are children at risk?

No Natural Protection

The lens in the human eye does not filter out blue light until age 40.

Shorter Arms, hold devices closer

The closer the device is to the eyes, the more the exposure.

Larger pupils

Larger pupils let more light into the eye.

Where does blue light come from?

You encounter blue light in everyday activities. Flourescent lighting, electronic screens (phones, tablets, computers, TVs, etc.), and the sun emit high-energy blue light. 

The potential impact of blue light


  • Tired Eyes
  • Sensitivity to light
  • Loss of sharp contrast vision
  • Difficulty seeing at night
  • Discomforting glare


  • Fatigue
  • Difficulty staying focused
  • Difficulty falling / staying asleep
  • Headaches
  • Increased migraines
  • Behavioral issues in children


  • Early onset of cataracts 
  • Risk of macular degeneration
  • Risk of diabetes
  • Risk of obesity

What can be done?

BluTech eyeglass lenses block all UV and filter out harmful blue light, all without altering color perception.  The lenses can be made with or without prescription and fit into most eyeglass frames.   BluTech protection is infused in the lens, it is not a tint or coating and it will not fade.


Written by Dr. Michael Duong

Dr. Duong received his bachelor’s degree in biology with a minor in chemistry at San Jose State University. He then attended Pennsylvania College of Optometry and received his Doctor of Optometry in 2009.
instagram facebook facebook2 pinterest twitter google-plus google linkedin2 yelp youtube phone location calendar share2 link star-full star star-half chevron-right chevron-left chevron-down chevron-up envelope fax