Our sleep cycle is regulated by our internal body clock or circadian rhythm, which uses the light sensors in our eyes to track what our body perceives as daylight in order to match our schedule to our environment.
This process can be disrupted when exposed to artificial light, which contains blue light. Blue light is used by LED screens including televisions, computers and our phones, and can be problematic as it closely mimics natural sunlight. Because of this, our body interprets blue light as sunlight and sends signals to the brain that we should be awake. This can throw off our circadian rhythm and contribute to insomnia and other sleep-related issues.
Fortunately, there are steps you can take to help alleviate some of the issues caused by blue light to ensure a good night’s sleep:
- Invest in special blue-light-filtering glasses: These special-purpose glasses are available without an eyeglass prescription, so you can use them even if you have no need for vision correction or if you routinely wear contact lenses. [or ask about our blue light lens coating]
- Avoid the use of LED screens in the evening: Substitute phone time or watching television with blue-light-free activities, such as reading a printed book. Use specialized lighting such as the Dyson Lightcycle, a task light that continually adjusts its colour temperature and brightness in relation to your local daylight, providing the right light for the right time of day.
- Use a blue light filter app: Available for smartphones, tablets, and computer screens, blue light filters tint your screen to neutralize the blue light emitted – a fast and effective way to instantly reduce exposure. Some phone companies, realizing the importance of blue light filtration, have even included built-in blue light filters within their operating systems. Search the features on your smartphone to see if a “night shift” setting is available.