Blue Light Information Hub

We believe in being clear about what blue light is, how it affects you, and where blue light glasses can (and can't) help. Check out the topics below to learn more.

Blue light is part of the visible light spectrum, typically defined as wavelengths between 400–500 nanometres (nm).

It is naturally present in sunlight and plays an important role in regulating your body’s internal clock.

Blue light is also emitted by artificial sources, including phones, computers, tablets, and LED lighting, with digital screens typically peaking around 455nm.

Blue light helps regulate your circadian rhythm (your natural sleep-wake cycle).

During the day, natural exposure to blue light from sunlight helps you feel awake and alert
In the evening, lower natural exposure (as the sun sets) helps your body prepare for sleep

However, modern screen use introduces unnatural exposure to blue light later in the day, particularly from devices like phones, laptops, and TVs.

Research suggests that exposure to this late-day, screen-based blue light, especially in the 450–500nm range, can interfere with your body’s natural wind-down process by delaying melatonin production (the hormone that helps you fall asleep).

This is why managing blue light exposure in the evening may support better sleep.

You might have heard some sources claim that blue light from screens can cause eye damage, eye strain, headaches, and general fatigue. Some may even claim that blue light is the cause of serious issues like cataracts or macular degeneration.

There is currently no strong evidence linking blue light exposure to serious long-term eye disease. Some people nevertheless report reduced eye strain, fatigue and headaches, as well as improved sleep quality, when using blue light glasses. That said, it is important to note that evidence relating to these effects remains incomplete, and experiences can vary between individuals.

We do not claim that normal screen use causes serious eye disease or long-term damage.

While long-term damage is not established, research does show that blue light can:

Influence your sleep cycle (circadian rhythm)
Affect how alert or tired you feel depending on timing of exposure

Some people also report:

Reduced eye strain and fatigue
Relief from light sensitivity–related headaches

These effects can vary from person to person.

Because blue light affects alertness and sleep timing:

Evening use may help reduce stimulation before bed
Morning use may be less beneficial (and may actually reduce your natural alertness)

You may also choose to try using our screen comfort glasses if you experience discomfort after extended screen use, such as:

Eye strain
Fatigue
Difficulty winding down at night
Headaches

Individual responses will vary, and our screen comfort glasses are best viewed as one tool among many.

Not necessarily.

People have different levels of sensitivity to light, and experiences can vary:

Some people notice improvements in sleep, comfort, or reduced strain
Others notice only subtle or minimal changes

This also applies to symptoms such as:

Eye strain
Fatigue
Difficulty sleeping
Headaches after screen use

For some, even environmental lighting (such as bright office lights or headlights at night) can contribute to sensitivity, while others are unaffected.

Our screen comfort glasses can be combined with other simple strategies to help reduce overall blue light exposure:

Use built-in device features like Night Mode or Warm Display settings
Reduce screen brightness in the evening
Limit screen exposure before bed where possible

These small adjustments can make a notable difference, particularly when implemented later in the evenings.

Discomfort during screen use can have multiple contributing factors, not just light exposure.

These may include:

Desk setup and posture
Screen positioning and brightness
Lack of breaks or movement
General lifestyle factors such as sleep, hydration, and overall health

Addressing these areas can often improve overall comfort when working at a screen.

If you experience ongoing or severe issues such as:

Vision problems
Persistent eye strain
Frequent headaches
Significant light sensitivity

You should speak with a qualified health professional, such as an optometrist, for advice.

Blue light is not inherently harmful. It is a natural and essential part of how your body regulates energy and rest.

The key is how and when you're exposed to it, particularly in a modern environment where screen use extends well beyond daylight hours.

Our screen comfort glasses are designed to help you better manage that exposure, especially during extended screen use and in the evening, as part of a broader approach to staying comfortable, focused, and well-rested at your desk.

If you’re interested in trying them for yourself, you can explore the range here.