What are blue light lenses?

Your eyes are constantly exposed to blue light, mainly through the sunlight but also some artificial sources like comptuers, smartphones, LED lights and energy-efficient light bulbs. Different types of blue light include blue-violet light* which emits from the sun, as well as blue-turquoise light and LED blue light that emit from electronic devices.

How does blue light affect my eyes?

As blue light has a high energy level, just like UV rays, it can penetrate your eyes through to the retina. It is also thought over exposure to blue-violet light can damage the retina, although there is little research to support this.

Blue-turquoise light may affect how well you sleep. It suppresses how well your body produces melatonin, the hormone which controls your sleep cycles. If you don’t produce enough melatonin, you can trick your body into thinking you don’t need to sleep. A lack of sleep can cause:

Eye strain
Fatigue
High blood pressure
Diabetes
Depression

When speaking to our customers, 63% said they have tired eyes after looking at screens.

Lots of the damage thought to be caused by blue light is often due to not blinking often enough. Blinking lubricates your eyes. When you stare at digital devices for too long, you blink less often than usual, which can cause:

Dry eyes
Eye strain
Irritated eyes
Headaches

How do blue light glasses work?

The lenses in blue-violet light glasses may have a subtle tint, which helps to counterbalance and filter blue-violet light. They filter blue-violet light just like sunglasses filter UV rays.

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What are blue-violet light lenses?

Do blue-violet light glasses work?

Is blue light harmful to my eyes?

If you’re worried about your vision, you can talk to us in store or come in for an eye test. We also have a variety of lens options for you to choose from.

Book an eye test

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*Based on 1200 customers who purchased blue light glasses in 2021.

T This survey was carried out in 2021 in the form of a questionnaire. We asked 1,200 customers who had previously purchased blue-violet light glasses from Vision Express some questions about their experiences and opinions on using blue-violet light filter glasses.

**Blue-violet light is between 400 and 455nm as stated by ISO TR20772-2018.