Blue Light Protection

There has been a lot of speculation that blue light is detrimental to your eyes’ health and increased screen time is damaging to your eyes resulting in eye-strain, headaches and sleep deprivation.


To combat this, blue light blocking lenses have been developed to help provide your eye with more visual comfort when faced with blue light from the sun and screens.


At PRETAVOIR, we offer both blue control glasses ready made [from brands such as Tom Ford & Blueberry] and we offer blue light control coatings on all our optical lenses.


Eyewear to block blue light has become increasingly popular and understandably there are some questions regarding how it can help protect your eyes from computers & improve your sleep quality...

We have compiled some questions and answers below but if your question hasn't been answered please feel free get in touch.



What Is Blue Light?

Without getting too much into the intricate physics behind how light travels through your eye we can briefly explain there is an inverse relationship between the wavelength of light rays and the amount of energy they contain. Blue-light is on the shorter side of the light spectrum meaning this type of light contains more energy.

The human eye is very effective at blocking UV rays from reaching the light-sensitive retina at the back of the eyeball. However, when it comes to blue light virtually all light passes through the cornea and lens and reaches the retina.


Where Does Blue Light Come From?

Sunlight is the number one source of blue light. However, there are many indoor sources of blue light such as fluorescent and LED lighting. The most common being the display screens on our computers, smartphones, televisions and tablets. These digital devices emit significant amounts of concentrated blue light directly into our eyes with each use.


Why Is Blue Light An Issue?

Your eye does not filter blue light very well leading to the light rays travelling directly to our retinas. It is thought that too much exposure to blue light can affect light-sensitive cells in the retina. This causes changes that resemble those of macular degeneration, which can lead to vision loss.

Everyday side effects of blue light are that it can interfere with your sleep quality, cause screen-induced migraines and lead to eye strain.



How Does Blue Light Affect My Sleep?

You have probably noticed more technology such as smart phones and laptops offering you 'night-mode' options? Blue light lenses work in a similar way... More than any other colour, blue light confuses your body by blocking a hormone called 'melatonin' which can make you feel tired. So, if we spend a lot of time staring at screens our bodies may artificially feel awake and subsequently we take longer to fall asleep.



How Do Blue Light Lenses Work?

As blue light glasses are relatively new to the market there is not a lot of research to prove their immediate benefits however it has been widely recognised that blue light blocking lenses minimize eyestrain, improve your sleeping habits through increased visual comfort.



Do I Need A Prescription For Blue Light Lenses?

No. You don't require a prescription lenses to order blue light glasses. Computer glasses are a great way to combat the blue light exposure from computers and other digital devices. You can purchase these as special-purpose glasses without a prescription. This can be beneficial if you have no need for vision correction or if you routinely wear contact lenses.



How Do I Lenses With Blue Light Protection?

If you require a prescription lenses then when you're ordering your glasses on our site, simply click ‘add optical lens’. You will see a section to either upload, call or email your details. If you don't require a prescription lense, then opt for 'I will call or email my prescription' and let us know you're only requiring the coating. Then you can choose your brand, we offer lenses from WLC, Kodak and Zeiss in a variety of packages. Each brand provides an option to add a blue light coating:

- Bluemax Ultra with WLC Lenses


- BLU Protect Kodak Clear with Kodak Lenses


- Blue Protect Dura Vision Platinum with Zeiss Lenses


Please ensure you select your preference in the Lens Features when ordering. Our customer service team are always on hand to assist you via live chat!