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Once the sun has set and your being exposed to any artificial light source we strongly recommend wearing our night-time blue light glasses.

BlockBlueLight Glasses are also made with top quality acetate frames with spring hinges and top of the line optical grade CR-39 lenses . We are confident that you won't find better quality blue light blocking glasses on the market.

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Then at night-time we need to make sure we block ALL blue light, as any amount getting through is enough of a signal to the brain that it’s still daytime, so our sleep hormone melatonin will be suppressed and you will have lower sleep quality, trouble falling asleep, or staying asleep, or all of these issues. So ensuring the glasses you use are blocking 100% of blue light is key for night-time!

The NightFall range is the most powerful and premium lens available. These block 100% of blue light along with 100% of green light up to 550nm. Why green light? Well, green light is right next to blue on the visible light spectrum, and the melatonin disruption zone extends right into the green light spectrum. These glasses provide the most optimal blue (and green) light protection available to maximise sleep quality. The red lens is the best option for people struggling with poor sleep or insomnia, or are looking to maximise sleep quality as much as possible.

SunDown Amber Lens - The SunDown Amber lenses are an ideal option for people who are wanting a high quality premium blue blocking lens verified to block 100% of blue light, but prefer a lighter amber tint over our nightfall red lens.

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All of BlockBlueLight's night-time glasses have been extensively researched, scientifically designed and manufactured specifically using the best technology to ensure ALL of the wavelengths of harmful blue and green light are both being removed. Our glasses block blue and green light in line with peer reviewed academic literature.

Evening exposure to blue light sends a “daytime” signal to the brain, which may disrupt the body’s natural preparation for rest. The biggest sources are the devices we use every day — computer screens, smartphones, LED lighting, TVs, and even the light inside the fridge all emit high levels of stimulating blue light.

Wearing the night-time glasses as soon as it gets dark will ensure maximum melatonin release which will then ensure you obtain deepest and most restful sleep.

Many glasses that claim to be blue light blocking glasses on the market are just cheap glasses with an insufficient blue light reflective coating applied to them. These cheap glasses only filter anywhere from 5-15% of blue light. No science has gone into creation of blue light lens to ensure its blocking blue light in line with peer reviewed academic literature for sufficient protection.

The SunDown range is designed and verified to block 100% of blue light. Wearing these glasses in the evening may help support natural melatonin production and promote a more restful night’s sleep. They are best worn 2–3 hours before bed as part of a healthy nighttime routine.The amber lens is ideal for those seeking a premium 100% blue-blocking option with a lighter tint—perfect for maintaining colour perception while minimising stimulating blue light exposure in the evening.

BlockBlueLight's Blue Light Glasses are evidence based, science backed, and align with the academic research on blue light. We use a special pigment embedded into the lens which absorbs the blue light as it passes through (instead of just a basic reflective coating), this ensures our blue light lenses block 100% of all the blue and green light up to 550nm which is the exact wavelengths of light shown in the research to lower our melatonin levels and impact our sleep.

These glasses should stay on from the point of sunset up until going to bed. This allows your brain to recognise that its night-time and to start to wind down for sleep, this cannot happen in the presence of any blue or green light.

BlockBlueLight's night-time sleep glasses give you the best of both worlds: you can still use phones, devices, tablets and watch your favourite TV shows, yet your sleep and health don't need to suffer. By effectively blocking blue and green light from a variety of sources you allow maximum melatonin production to occur, helping you to get the best night's sleep, and wake up full of energy.

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8116 exhibits good resistance to temperature extremes and high humidity, with excellent clarity, low shrinkage, and slight flexibility. It is superior to other adhesives when bonding glass to glass or glass to metal, and is ideal for wicking and low bubble formation.

Alternatively we have created our fit-over range of daytime blue light computer glasses which have been specifically designed for this reason. This allows you to put our lightweight fit-over glasses over the top of your glasses to provide you with the best blue light protection. You can continue to wear your existing reading or prescription glasses, and our fit-over glasses will nicely fit over them and provide maximum protection against blue light.

Our night-time glasses block 100% of blue light, and when your brain receives no blue light signals it assumes its night-time so it will start to prepare you for sleep even if it’s the middle of the day. So having these glasses on during the daytime will leave you feeling tired, unmotivated, sleepy, and your brain will be very confused as to what’s going on!

The lighter amber tint allows for greater colour perception in the evening hours for a more pleasant viewing experience. These are a great option to use in the early evening while cooking dinner, watching TV, or out socialising.

NightFall Red Lenses - These block all light wavelengths of blue and green light up to 550nm. These are the exact wavelengths shown to most affect our internal clock, lower melatonin levels alter our sleep/wake cycle.

Our daytime glasses allow the healthy wavelengths of blue light through to allow you to feel awake and alert, and filter down the harmful wavelengths that cause eye damage, headaches, and eye strain.

There are many blue light blocking glasses available on the market making all sorts of different claims. We know that this can make purchasing a quality pair overwhelming and very confusing!

BlockBlueLight shows its lens reports for each lens on our website. Located under each individual product. No other company will show you their lens reports as they have something to hide, we do not and are happy to share these with you.

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Clear or yellow lenses are not sufficient for night use! - Any blue light lens that is clear or yellow will not be sufficient for night-time use. These types of lenses do not block enough of the blue light wavelengths to have positive impact on sleep and circadian rhythms. Even just a small amount of blue after dark will signal to the brain that it’s still daytime which in turn will suppress our sleep hormone melatonin from being released. This is why it’s extremely important to use a set of blue light glasses that have been verified to remove 100% of all the blue wavelengths or they will not be very effective at all.

Overtime a lack of blue light during the day will lead to depression, anxiety, and low mood, so you want to make sure you’re not blocking it all out during the day!

The NightFall Red Lenses not only block 100% of blue light but also all green light up to 550nm. Why block green light as well? Research and academic studies clearly show the green light emitted by modern electronic devices and light bulbs is also contributing to suppressing melatonin levels at night.

The key here is to target the exact wavelengths of blue light that lighting and screens emit the most, this is 455nm. Our glasses have been designed to filter the 455nm range of blue light by 50% with our ScreenTime clear lens, and 100% with our DayMax yellow lens, whereas most daytime blue light glasses will only filter blue light up to 430nm, and filter none at all at 455nm making them very ineffective!

We have our lenses tested by a laboratory grade spectrometer to ensure we are producing the very best lenses which effectively block all blue light. You can see our lens testing reports here. We are confident that you won't find better quality blue light blocking glasses on the market.

There are also many other brands of blue light glasses are being sold that have clear lenses yet are still claiming to block various sources of blue light. Typically, these lenses are really only filtering out very small amounts of blue light. Common clear lens blue light glasses will only really be capable of filtering around 10% - 20% of blue light - slightly beneficial for eye strain but they will not have any benefits in preserving melatonin and improving quality of sleep.

This harmful blue and green light has been extensively researched, and has been proven to inhibit our body's ability to naturally produce melatonin, the brain's 'sleep hormone'.

A lot of the orange or red-tinted blue light glasses being sold are just simply that, red and orange-tinted glasses. Often suppliers have not properly designed the lens to ensure it is actually blocking the correct wavelengths of blue light, with no research or testing in these products' development. If this is the case, you aren't likely to notice any significant changes or benefits from these types of lenses.

Rapidstick™ 8116 UV Curable Adhesive is a low viscosity, high wetting, 100% solids liquid glue which provides an ‘on demand’ bond, eliminating drying and heat curing. It offers many advantages in bonding where the adhesive can be exposed to ultraviolet (UV) light with a remarkably fast, almost instant cure, due to its maximum UV absorption range of between 350 and 380 nanometers.

Yes, we have our complete glasses range available in prescription glasses and readers glasses. We can make any custom prescription including progressive/varifocal lenses. On each glasses product page, there is a selector to choose prescription glasses, you then choose if you want single vision or progressive/multifocal lenses and whether you would like standard lenses or thin and light lenses. There is then a place for you to upload your script as well. Then checkout and place your order. From here our optics lab will take care of the rest getting you custom prescription glasses made for you.

BlockBlueLight's night-time sleep glasses have been specifically designed to block ALL the blue and green light wavelengths which are emitted from electronic devices and any artificial light sources. This includes smartphones, laptops, computer screens, LED and Plasma TVs, tablets, fluorescent lighting in offices and stores, and conventional LED lighting in homes.

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When worn after the sun goes down, our night-time glasses block out ALL blue and green light, allowing your body to naturally wind down and prepare for sleep. This ensures you will fall asleep fast, stay sleep longer, and guarantees quality restful sleep.

8116 is designed to give the best possible clear adhesion to glass surfaces, metals, wood, and other glass filled materials. It is highly recommended for bonding glass furniture, sculptures and trophies, crystal assemblies, glass tops, and optical items.

Once the sun sets, even small amounts of blue light may interfere with melatonin production, affect your natural wind-down process, and impact circadian rhythms. Our SunDown and NightFall lenses are specially designed for evening and night-time use to help reduce light exposure that may affect sleep and support a more relaxed nighttime environment.

We do not recommend using the night-time glasses during the day as this will create a circadian mismatch and will actually cause issues with sleep later in the evening. Using night-time glasses during the day with be very harmful and will actually be detrimental to your health. Let me give you a bit more detail as to why:

We need healthy amounts of blue light during the day as its responsible for making us feel awake, motivated and alert. The issue we have is we get far too much blue light during the day as modern lighting, screens, and devices, as they emit very unnatural levels of blue light, so we need to bring it back into balance and that’s were our daytime glasses help.