What is blue light?

The sun is the largest natural source of blue light, while digital screens and LED lights are the primary sources of artificial blue light.

The sun emits blue light ranging from 400 to 500 nm, with the highest intensity during mornings and gradually decreasing throughout the day.

On the other hand, artificial light predominantly peaks around 455 nm. Therefore, when considering blue light lenses, it is crucial to examine the level of protection, specifically at 455 nm.

Blue light plays a crucial role in regulating our body's circadian rhythms. It signals our brain to wake up and stop producing melatonin, the sleep hormone.

To maintain a healthy sleep-wake cycle, it's important to have a sufficient exposure to blue light in the mornings.

However, excessive exposure to blue light, especially in the evening, can deceive our brains into thinking it's still morning, disrupting our ability to prepare for sleep.

Some studies indicate that exposure to blue light can lead to long-term damage to the retina.

Additionally, blue light can cause digital eye strain, blurry vision, headaches, and dry or itchy eyes after prolonged periods of staring at digital screens, averaging nine hours per day.

No, not all blue light lenses are effective.

Most clear blue light lenses only filter up to 420-430 nm, which makes them ineffective for digital screen protection. Other blue light lenses, such as yellow or orange ones, can distort colour perception and may filter out too much blue light.

BluTech has a different approach to managing blue light. Our lenses allow for a healthy amount of blue light exposure without causing harm. Additionally, they preserve a natural colour perception.