Reglaze Glasses 4U Introduce our new

Anti-Blue Light Blocking Lenses (Blue Control)

for computer users, and everyday wear.


Does this sound familiar?

After spending hours in front of a computer screen at work, you go on to spend yet more hours using other electronic devices at home. You often have headaches, fatigue, burning, watering, irritable or reddened eyes, flickering images, and intermittent short sightedness. You’re not alone. These symptoms have become so common; they even have a name, (CVS) Computer Vision Syndrome.

With the introduction of so many electronic devices, our eyes are put under enormous pressure as they are exposed to harmful light spectrums. Few people realise that our eyes are also exposed to harmful high-energy blue light and UV rays at home as well as at work.

LCD or LED Computer and TV screens, smart phones, tablets, and Fluorescent, CFL and LED bulbs all have a high blue spectral emission. Essentially, if you have any of the electronic devices now considered a necessary part of our everyday lives, you’re more than likely already being affected by the blue light in more ways than you realise.

We already know to take regular breaks from the screen. Staring at a screen for hours at a time slows down the blink reflex, causing eyes to feel dry. Use of eye drops to try to relieve dryness and eye tiredness can help, but only for a few minutes. Drops are not a long term solution.

So what is the solution?

Anti-Blue lens

Anti-Blue Lenses – Every time

Our new Anti-Blue Lenses are scientifically proven and block out 100% of harmful Blue Light.

They are infused with the precise balance of ocular lens pigment and melanin to defend your eyes against harmful blue light spectrums both indoors and out. Further, such lenses effectively soothe tired, strained eyes and ward off computer vision syndrome (CVS) for those who use computers and play games frequently. Objects and text will also appear clearer, sharper and better defined as a result of wearing blue-filtering lenses.

Anti-Blue Prescription Lenses are also available

Anti-Blue Lenses are available as non-prescription for people who need no optical correction, but need to protect their eyes from harmful blue light.

They are also available as single vision lenses for people who need optical correction, and normally need spectacles to see clearly. They are available as standard 1.50 thickness, 1.60, 1.67 and 1.74 thinner/lighter lenses for people with stronger prescriptions with thicker lenses. We can supply bifocals and our own Premium Wide Vision Varifocal Lenses with blue light protection for either clear or photochromic lenses. We are now also able to supply top quality branded Essilor Varifocal Lenses with Prevencia blue light protection as clear or photochromic lenses, in standard and all thinner thickness lenses.

Other features of Anti-Blue Lenses are:

. Available as prescription or non-prescription lenses. Therefore they can be used for TV, gaming etc, as well as for the computer, laptops, tablets and smart phones even if prescription lenses are needed.

· Screens out the harmful Blue-violet light, keeping the eyes completely protected, relaxed, and comfortable as eye-strain is being eased.

· Permits only the beneficial light to pass through

· Maintains clear vision through the lens

· Does not alter colour perception, offering a more natural colour perception

· Reduces stress on eyes caused by constant refocusing

· Comes with the additional properties of anti-static, scratch resistance, anti-reflection and super hydrophobic coating

· All Anti-Blue Lenses include a UV-400 filter to protect fully against harmful UVA and UVB rays

· Prescription lenses are available in Single Vision, Bifocal or Varifocal Lenses. Standard 1.5 and all thinner/lighter lenses. We also supply Essilors Varifocal, Bifocal and Transitions lenses with blue blocking protection.

What happens to blue light

What about the long-term effects of exposure to blue light?

Worryingly, long-term effects of blue light are only now becoming apparent. Many clinical trials (1), (2) confirm that over-exposure to blue-light can silently ravage the photo-receptor cells within the eyes’ retinas over the course of years and can cause a host of vision-destroying diseases including premature and age-related macula degeneration(AMD). The harmful blue light causes gradual oxidation and deterioration of the macula and leaves eyes more susceptible to disease. The over exposure to certain Blue Lights also effects our sleep pattern, known as Circadiun Rhythm. This is explained in greater detail further down the page.

Here’s WHY I introduced my own brand of Blue Light Blocking Lenses…Having worked for over 19 years in the optical industry myself, I know the importance of looking after your vision. Just as important is buying quality lenses as there are a lot of very poor quality lenses out there.  Poor lenses very often means poor vision. With lenses it really is true that “you get what you pay for.”

When I heard about the amount of damage blue light can do to your eyes, my first thought was that I really needed to buy some for myself. I spend at least 6 hours a day working in front of a computer screen. Add to that, my smart phone that I always use to speak to customers, the TV, and my iPad that I often read in bed. That’s a lot of time in front of the electronic devices that are potentially damaging my eyes long term. When my eyes were twitching, and felt dry and tired, I simply put it down to needing more sleep. Now I know better. By wearing protective lenses now, I have the comfort of more rested eyes, while looking ahead to the future, I feel happier knowing I’m taking steps to prevent becoming blind or partially sighted with Age Related Macula Degeneration (AMD) when I’m older.

Where to look first…

I looked on Amazon and other websites to see what kind of glasses were available to help cut out the blue light.
I found Gunnar glasses that appeared to do the trick, but not really any other lenses that I might consider using myself. Gunnars certainly reduce blue light, and eye strain, which is what I wanted, but I didn’t particularly like any of the styles. If I’m wearing glasses at the office all day, I want to feel happy with the frame as well as the lenses. I also need prescription lenses. Gunnar supply prescription lenses, but firstly, and very importantly I noticed that they have a no returns or exchanges policy on prescription glasses. I wasn’t happy about this in case they were wrong. I also didn’t want to pay shipping costs from America. Gamma Ray computer glasses also looked good, but being an American company, shipping was once again too expensive.

So even though Gunnars and Gamma Ray sound very good, they weren’t exactly what I was looking for. Now what do I do?

Back to the internet. I found lots of cheap and nasty so called blue light reducing computer glasses on the internet from as little as £9.95 When I looked into them in more detail, the reviews were terrible. The frames were flimsy and very poor, the anti glare sounded to be of such poor quality it would be a waste of time having it, and they only reduced a very small amount of blue light. My eyes are very valuable to me. I wanted 100% protection against the harmful blue light not just 8% as some were offering. I could buy these glasses in bulk for as little as £2 a pair from China. I value my eyes too much to even consider using anything of this quality, and doubt they’d be any good anyway.

Cheap, poor quality glasses are never a good idea, but seemed to be the only option left. So now what? The obvious answer was to create my own brand of Blue Light Blocking Lenses.

Introducing –  Anti-Blue Light Eyewear

With my online glasses reglazing company already supplying prescription lenses, my first job was to search for top quality blue light reducing lenses that are available as prescription and non prescription lenses.

There are a few companies making their version of the lenses, and the one I finally settled on, supplied by one of the worlds leading lenses suppliers, ticked every box and excels in all the qualities I was looking for. I no longer had tired, irritated eyes, and neither do my friends and customers who wear their new Anti-Blue Lenses.

So…How much are they?

Anti-Blue Lenses

Non prescription…. 1.5 Standard thickness …£85

Prescription ……….1.5 Standard thickness …£85

Prescription ……… 1.60 Thinner/Lighter…….£110

Prescription ……… 1.60 Thinner/Lighter……..£110

If Reglazing your own frame with any of our lenses including Anti-Blue lenses, the same prices apply as there is no extra reglazing charge.

All rimless frames need the 1.60 lenses or Polycarbonate lenses as they are stronger. Standard lenses are more brittle and are likely to crack or break. As rimless glazing is more technical and takes quite a bit longer to process, a £10 charge is added for all rimless frames.

Circadian Rhythm

 The detrimental effect Blue Light can have on our sleep

Here is some very valid information that I found in the Menthal Health Daily Blog, explaining the effects exposure to blue light can have on us all in general…..

It’s important to realize that one of the keys to controlling the risk factors for any disease including AMD is efficient patient education. By wearing Anti-Blue Lenses to filter out 100% of blue light, maintaining a healthy, and active lifestyle, sight-stealing conditions like macula degeneration can be avoided and vision can be preserved into old age.

Most people are unaware of the fact that bright light after sunset probably isn’t healthy, especially if you are suffering from insomnia, dealing with poor sleep quality, or a circadian rhythm disorder.  For millions of years, humans functioned without artificial lights, TVs, and other electronics (e.g. cell phone screens).  They relied solely on the sunlight and their circadian rhythms adjusted; making it easy to rise with the sun and sleep after sunset.

In the age of technology, our senses are bombarded with bright street lights, household lights, TVs, computers, and cell phone screens long after the sun has set.  The problem is that bright light from these sources after sunset stimulates your retina and tricks your brain into thinking it’s still daytime.  You may know consciously that it’s “night” but this is an unconscious process – interpreted by your nervous system as the sun being high in the sky.

The excessive light stimulation after sunset triggers a cascade of neurophysiological changes that will detrimentally impact your mental and physical health – even if you aren’t perceptive of these effects.  Although all light after sunset is problematic, perhaps the most problematic wavelength is that of “blue light.”  Blue light exposure after dusk has been associated with causing insomnia and sleep disorders, but also more serious illnesses like cancer, heart disease, diabetes and obesity.

What is blue light?

Light consists of electromagnetic particles that travel in “waves.”  The waves vary in terms of length and intensity.  The shorter the “wavelength” of light, the greater the concentration of energy.  The length of the light waves is measured in nanometers (nm) and each wavelength is associated with a particular colour.  All light is categorized into either: gamma rays, x-rays, UV (ultraviolet) rays, visible light, infrared light, and radio waves.

The eyes of humans are only sensitive to the wavelength of “visible light.”  All visible light contains colours of: red, orange, yellow, green, blue, indigo, and violet.  Within the visible light spectrum, blue light has a very short wavelength (380 nm to 500 nm) and is ultimately more intense to the eye.  The effect of blue light can be positive or negative depending on the time of day exposed.

Individuals exposed to blue light during the day generally are in a better mood, have more energy, and are more alert.  However, exposure to blue light after the sun has set will suppress melatonin production and increase your risk of insomnia, poor sleep, and even more serious conditions like cancer.  Therefore it is likely important to be cognizant of your blue light exposure and remember – it’s good during the day, but bad at night.

What are the sources of blue light?

Blue light is ubiquitous in that it is nearly everywhere.  As light from the sun penetrates the atmosphere, short/high-intensity blue wavelengths of the spectrum collide with air molecules.  This collision results in the scattering of blue light in all directions (everywhere you look).  Blue light is what causes us to perceive the sky as having a “blue color.”

Despite the fact that it is produced naturally by the sun, blue light is also artificially generated from technology – particularly digital screens.  If you use a TV, computer, smart phone, iPad, or other electronic device – you’ve been exposed to blue light.  The light bulbs in your house emit blue wavelengths unless you’ve strategically replaced them; perhaps the worst culprits for excessive blue light generation are fluorescent bulbs and LEDs.

How Nighttime Blue Light Exposure Disrupts Sleep, Causes Insomnia

When the sun sets, your body responds to the darkness by changing its hormone production to reduce arousal and promote somnolence.  Most notably is a shift in the production of the neurohormone melatonin, which is secreted by an organ in the brain called the pineal gland.  The pineal gland begins manufacturing melatonin several hours before you go to bed; as the melatonin levels continue to rise, you feel sleepier.

Think of melatonin as an endogenously produced sleep-promoting agent.  It doesn’t knock you out like a sleeping pill, but makes it easier to fall asleep when it is sufficiently produced.  In other words, your alertness drops, you feel drowsier, and it becomes more difficult to resist falling asleep.

Blue light prevents release of melatonin from the pineal gland

Blue light exposure is known to prevent endogenous release of melatonin from the pineal gland.  Thus you’re left with no melatonin to facilitate sleepiness.  Melatonin has a number of other functions such as: acting as a neuro protective  and influencing production of serotonin.  Individuals with low serotonin often also have low levels of melatonin; the two tend to have a symbiotic relationship.

While a little bit of blue light may not significantly alter melatonin production, when a certain threshold is met (in terms of the amount contacting the eye), the pineal gland doesn’t release melatonin.  If you’ve been hopping into bed with your iPad, cell phone, laptop, or even watching late night TV – you’re disrupting your body’s ability to produce melatonin.

Cascade effects stemming from melatonin disruption

Melatonin disruption may not seem like a big deal, but it really disrupts your entire physiology.  Disruption in the endogenous production of melatonin is capable of triggering a cascade effect – altering other hormones, neurotransmitters, and your circadian rhythm.  Deficient melatonin at night has been linked to a variety of serious health conditions such as: cancer, diabetes, and heart disease.

Arousal: Melatonin production reduces your arousal, thus allowing you to fall asleep.  Individuals with high arousal or subject to significant stress aren’t able to manufacture necessary melatonin to tone down their sympathetic nervous system.  If you’re exposed to blue light at night, you are more likely to maintain a higher degree of physiological arousal, or perhaps exacerbate preexisting stress.

Circadian rhythm disorders: In the past, humans never had circadian rhythm disorders due to the fact that they relied solely on the sun for light.  When melatonin production is disrupted by exposure to blue light at night, people develop conditions like shift work sleep disorder; characterized by sleep-wake cycle abnormalities.  Blue light disrupts the body’s natural “biological clock” or inclination to wake and sleep at certain times – which leads to compromised psychological health.

Insomnia: Most individuals with insomnia are unaware of the fact that bright light – particularly blue light is impeding their ability to fall asleep.  Melatonin is a hormone necessary to help promote somnolence.  Some cases of insomnia are likely caused by significant exposure to blue light prior to bed.

Neurotransmission: Melatonin has a symbiotic relationship with many other neurotransmitters such as serotonin.  When one or the other becomes imbalanced, the other may also become imbalanced.  This may create an endogenous chemical imbalance, which may increase your risk of developing mood disorders like depression.

Sleep quality: Lack of melatonin tends to decrease a person’s sleep quality.  The body has unconscious physiological processes taking place that help promote health and survival.  If these processes (e.g. melatonin production) are disrupted by blue light, it will impair the time you spend in deep, restorative sleep.  An easy way to compromise sleep quality is to inhibit production of melatonin.

Other health risks: There are an array of general health risks associated with inadequate melatonin production at night.  Since blue light is known to inhibit the release of melatonin, exposing yourself to blue light may be upping your odds of developing an unwanted health condition.

  • Cancer: If you’re exposed to light at night, you may be increasing your risk of developing cancer (both breast cancer and prostate cancer). Low melatonin levels at night are thought to increase risk of developing many different types of cancer.  Adequate levels are hypothesized to have anticancer properties.
  • Diabetes: Exposure to blue light before bed may also facilitate the development of diabetes. As your circadian rhythms become disrupted, your blood sugar levels skyrocket and may throw you into a “prediabetic” state.  Consistently disrupted blood sugar levels may result in a permanent diagnosis of Type 2 diabetes.
  • Immune system impairment: When neurohormone production is altered as a result of light exposure after sunset, your immune system becomes impaired. This may leave you to get sick more often than others with proper melatonin production and sufficient sleep.
  • Obesity: Those exposed to blue light at night are known to experience a disrupt in circadian rhythms. The circadian rhythm disruption has been associated with decreases in the hormone “leptin.”  After you eat, your leptin levels are high which make you feel “full.”  Decreased leptin from circadian rhythm disruptions make you feel less full and more likely to eat in excess.

To what extent does blue light affect the circadian rhythm and melatonin?

It should be clear that any light exposure after sunset will suppress melatonin secretion.  That said, some wavelengths like blue light have a significantly greater effect than others.  In a study conducted by Harvard, researchers compared nearly 7 hours of blue light exposure to green light; both were considered equally bright.  Blue light exposure suppressed melatonin secretion nearly two-fold compared to green light exposure.

In other words, blue light has nearly twice as potent of an effect on your circadian rhythm compared to green light.  This means that if green light exposure postponed your ability to fall asleep by 2 hours, blue light would postpone it by 4 hours.  Other research is in congruence with the findings by those at Harvard.

A study by researchers at University of Toronto compared melatonin levels of individuals wearing blue-blocking goggles (to block indoor light) to individuals exposed to standard dim light with no goggles.  Researchers found that melatonin levels were nearly equivalent in both groups.  This showed that by simply blocking out blue light by wearing filtered goggles, melatonin levels were nearly the same as someone without exposure to any significant bright light.

Other studies have shown that approximately 60 minutes of general bright light exposure (1000 lux) at night suppressed melatonin to daytime levels.  Although eliminating all light is a healthy idea after sunset, this isn’t realistic for most people.  Instead, it may be better to compromise and implement the Pareto principle – target the wavelength with the greatest impact (blue light) on melatonin suppression.

How To Block Blue Light for Better Sleep

There are millions of people suffering from insomnia, but very few people making calculated efforts to overcome it.  Rather than waiting for new sleeping pills to hit the market, you may just need to eliminate blue light exposure after sunset.  Below are some ways you can block blue light to improve sleep quality and reduce the likelihood of insomnia without taking dangerous psychiatric drugs the like current Z Drugs linked to Dementia.

1. Blue Light Blocking Glasses

One effective way to limit your blue light exposure after sunset is to invest in some blue-blocking glasses.

That said, sunglasses are still highly effective compared to no intervention at all.  Anyone that’s going to be looking at a laptop, playing on an iPad, using a cell phone, or watching TV at night should be wearing blue light blocking glasses for the sake of their health.

2. Tweak your lighting

If you’ve customized the lights in your home to change based on the time of day, you’re one step ahead of the game.  Specifically, you should focus on implementing either dim lights, red lights, or dim red lights.  The tertiary option is likely superior to the first two, but all options are better than standard bright lights (especially LEDs and fluorescents).

  • Dim lights: If your lights can be dimmed, you should use the dimmed setting. The dimmer the light, the less your melatonin will be disrupted by the brightness.  Use the dimmest setting after the sun has set.
  • Red lights: Some people have strategically installed red lights throughout their home to minimize exposure to blue light after dark. Red lights don’t have as significant of an impact on your body’s circadian rhythm as other wavelengths.
  • Dim red lights: Those that are knowledgeable of the effects of light on neurohormone production may be futuristic compared to others in that they’ve installed dim red lights in their home. These lights can be used for visibility after the sun has set, yet they are the least likely to disrupt hormone (melatonin) production.

If you want to use nightlights such as to help you navigate to the bathroom during the middle of the night, it would be best to install dim red lights.  These will provide visibility, yet won’t impair your ability to fall back asleep.  You don’t want to jolt your retinas with a bright light of any kind if you wake up during the middle of the night; this will trick your physiology into thinking that it’s daytime.

It still boggles my mind as to why TVs, smartphones, and tablets aren’t manufactured with screen-filtering technology (or at least the option).  Screen filters reduce blue light, while still allowing you to use the device.  Although they will not eliminate Wi-Fi exposure (which could cause insomnia), they will not significantly decrease melatonin production.

Bottom line: Daytime blue light is good, nighttime blue light is bad

Just because blue light exposure at night has a detrimental effect on health, lack of blue light exposure during the day may be just as bad.  During the daytime (when the sun is up), blue light exposure promotes wakefulness, vigor, and vigilance.  If you want to be energized and want optimal mental performance throughout the day, blue light is necessary.

Your pineal gland doesn’t need to produce sleep-promoting melatonin during the day.  Blocking blue light during the day may increase your risk of developing depression or fatigue.  In fact, those suffering from certain types of depression (e.g. seasonal affective disorder) often benefit from customized “blue light” boxes that produce potent blue light during the daytime.

After sunset, you should be using the aforementioned tactics to minimize blue light exposure such as: screen filters, customized lighting, and blue blocker glasses.  Your goal should be to optimize your circadian rhythm and prevent exogenous light sources (e.g. from cell phones) from adversely affecting both your physical and mental health.  If you want to improve your sleep quality or overcome insomnia – minimizing blue light exposure at night should be a priority.

Have you blocked blue light to improve sleep quality?

If you’ve strategically blocked out blue light to improve your sleep quality and reduced insomnia, feel free to share a comment mentioning whether you noticed any benefit and how quickly you noticed improvement in your sleep.  The science supports the idea that filtering out blue light is likely to benefit many people struggling with insomnia and other circadian rhythm disorders.  If you have filtered out blue light during the night, what methods do you use (e.g. sunglasses, filters, customized lighting, etc.)?