What is Blue Light?

The basics

Blue light is part of the visible light spectrum — the range of light wavelengths our eyes can see. It sits at the shorter, higher-energy end of the spectrum, just above UV light. Sunlight contains blue light naturally, and so do LED screens: smartphones, tablets, computers, and TVs.

      Blue light itself is not dangerous in ordinary amounts. The concern for screen users is about duration and proximity — children often hold screens close and use them for extended periods.
    

Blue light and children's screens

Children's screen time has increased significantly. Many children now spend several hours a day on tablets, computers, or phones for school and leisure. Blue light from screens is not proven to cause permanent eye damage, but prolonged screen use is associated with:

Eye fatigue and discomfort
Difficulty refocusing between near and distance tasks
Disruption to sleep patterns if screens are used close to bedtime (blue light affects melatonin production)

What do blue light lenses do?

Blue light filter lenses have a coating that selectively reduces the amount of high-energy blue wavelengths passing through the lens. They do not block all blue light — they reduce it to a level that many users find more comfortable for extended screen use.

Important: Blue light lenses are a comfort option, not a medical treatment. They will not correct vision problems or replace a prescription. The 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds) remains the most evidence-backed way to reduce screen-related eye strain.

Is a blue light coating right for your child?

May help if your child…

Uses screens for 2+ hours daily
Reports tired or uncomfortable eyes after screen use
Uses a device in the evening before bed
Does significant homework on a screen

Not necessary if…

Screen time is limited and supervised
Your child has no complaints of eye fatigue
Budget is a priority (AR coating alone is effective)

All Reframify Kids lenses include anti-reflection coating as standard. Blue light protection is available as an add-on during lens configuration.

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