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Blue Light Explained


Why do we need to block harmful Blue Light?

 

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 concentrated harmful high-energy blue light. 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. It is the Violet-Blue from the colour spectrum that may be particularly harmful.

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 Anti-Blue Lenses 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.

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 100% of 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 as standard 1.5 and all thinner/lighter lenses. We also supply Essilor’s Varifocal, Bifocal and Transitions lenses with blue blocking protection.

What happens to blue light

Crizal Prevencia by Essilor

We sell lots of Essilor lenses with their version of Blue light protection which is called Crizal Prevencia. Without a doubt one of the finest lenses coatings world wide.

What about the long-term effects of over exposure to harmful 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 may silently ravage the photo-receptor cells within the eyes’ retinas over the course of years and may 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.

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 colour.”

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 Night-Time 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. A Melatonin supplement can be bought from Health stores when necessary to help aid sleep.

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.

  1. 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, night-time 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, vigour, 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.)?

A superb resource for Blue Light information is: http://www.bluelightexposed.com/#bluelightexposed

Price list for Blue Light Lenses

SINGLE VISION Blue Light Blocking LensesOur PriceHigh Street Prices
Our own Anti - Blue Lenses. Include UV-400 filter for UVA &UVB Rays, Anti-Reflection, Scratch Resistance, Anti - Static, Super Hydrophobic Coating.Our Anti-Blue Lenses are infused with the precise balance of ocular lens pigment and melanin to help defend your eyes against harmful blue-violet light spectrums both indoors and out. Further, such lenses effectively soothe tired, strained eyes and may 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 lensesVery popular lenses. See testimonials to see how people have noticed a difference when wearing them for computer work.
Anti-Blue Light Lenses 1.49
Without prescription
£85£150 - £175
Anti-Blue Light Lenses 1.49
£85£150 - £175
Anti-Blue Light Lenses Thin 1.60
£115£175 - £225
Our Polycarbonate 1.59 Lenses with Anti - Blue Light Protection£115£159 - £200
Anti-Blue Light Lenses Thin 1.67
£150£215 - £285
Anti-Blue Light Lenses Super Thin 1.74£190£250 - £325
Transitions 1.50 Standard Lenses with Anti-Blue Protection£160£195 - £265
Transitions 1.60 Thinner Lenses with Anti-Blue Protection£195£225 - £310
Transitions 1.67 Extra Thin Lenses with Anti-Blue Protection£235£299 - £360
Transitions 1.74 Super Thin Lenses with Anti - Blue Protection£255£325
ESSILOR Lenses with Crizal Prevencia Blue Light ProtectionCrizal Prevencia In Essilor's own words "Maximises the benefits of light, while reducing the risk. UV light from the sun can cause cataracts while blue-violet light is one of the contributing factors of damage to retinal cells. Prevencia also lets in the good light that regulates sleep and mood, and boosts brain activity. Our advanced technology provides the most effective UV protection possible, and filters out harmful blue-violet light.
Look out for the Essilor Sun Protection Factor (E-SPF) to be sure your eyes are protected.
This no-glare lens gives you the best vision in all light conditions, and is resistant to smudges, scratches, dust and water. "
Without a doubt one of the finest blue light protecting lenses currently available in today's market.
Essilor Orma (1.49) with Crizal Prevencia£155£195 - £245
Essilor Ormix (1.60) with Crizal Prevencia£195£265 - £325
Essilor Airwear 1.59 Polycarbonate with Crizal Prevencia£185"220 - £285
Essilor Stylis (1.67) with Crizal Prevencia£220£310 - £359
Essilor Lineis (1.74) with Crizal Prevencia£245£285 - £385
BIFOCAL LENSES with Blue Light Blocking ProtectionOur own Anti - Blue Lenses. Include UV-400 filter for UVA &UVB Rays, Anti-Reflection, Scratch Resistance, Anti - Static, Super Hydrophobic Coating.
Standard (1.5) D28 R24 with Anti-Blue Light Protection£135£185 - £225
Standard (1.5) D28 R24 Transitions with Anti-Blue Light protection£185£235 - £295
VARIFOCAL LENSES with Blue Light Protection
Premium Wide Vision Varifocal Lenses with Anti - Blue Light ProtectionOur own Anti - Blue Lenses. Include UV-400 filter for UVA &UVB Rays, Anti-Reflection, Scratch Resistance, Anti - Static, Super Hydrophobic Coating.Our Anti-Blue Lenses are infused with the precise balance of ocular lens pigment and melanin to help defend your eyes against harmful blue-violet light spectrums both indoors and out. Further, such lenses effectively soothe tired, strained eyes and may 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 Premium Wide Vision (1.5) Standard Lenses£175£235 - £295
Anti -Blue Premium Wide Vision (1.60) Thinner Lenses£215£265 - £325
Anti -Blue Premium Wide Vision (1.67) Extra Thin Lenses£235£295 - £325
Superior Freeform Digital Varifocal with Anti - Blue Light Protection.Very Latest, Most Advanced Digital Lenses customized with Digital Precision for each individual prescription. Surfaced front and back to create very comfortable lenses which guarantee
improved accuracy, higher definition and colour contrast, improved reading area, lightweight materials, double asphericity, softer design, scratch and impact resistance.
Superior Clear Coat: Anti-Glare, Anti-Scratch, Water/Grease/Dust/Smear Repellent
1.5 Superior Freeform Digital Varifocal with Anti - Blue Light Protection.£210£295 - £365
1.60 Superior Freeform Digital Varifocal with Anti - Blue Light Protection.£250£315 - £399
Superior Freeform Digital Varifocal with Anti - Blue Light Protection.£280£355 - £415
1.74 Superior Freeform Digital Varifocal with Anti - Blue Light Protection.£310£370 - £420
ESSILOR VARIFOCAL LENSES with Crizal Prevencia CoatingCrizal Prevencia In Essilor's own words "Maximises the benefits of light, while reducing the risk. UV light from the sun can cause cataracts while blue-violet light is one of the contributing factors of damage to retinal cells. Prevencia also lets in the good light that regulates sleep and mood, and boosts brain activity. Our advanced technology provides the most effective UV protection possible, and filters out harmful blue-violet light.
Look out for the Essilor Sun Protection Factor (E-SPF) to be sure your eyes are protected.
This no-glare lens gives you the best vision in all light conditions, and is resistant to smudges, scratches, dust and water. "
Without a doubt one of the finest blue light protecting lenses currently available in today's market.
Essilor Varilux Comfort New Edition(1.50)
with Crizal Prevencia
£265£315 - £395
Essilor Varilux Comfort New Edition Ormix (1.60)
with Crizal Prevencia
£305£335- £415
Essilor Varilux Comfort New Edition Ormix(1.59)
Airwear Polycarbonate with Crizal Prevencia
£305£345- £415
Essilor Varilux Comfort New Edition Stylis (1.67) with Crizal Prevencia£335£395 - £445
Essilor Varilux Physio 2 Orma (1.50) with Crizal Prevencia£305£335- £425
Essilor Varilux Physio 2 Ormix (1.60) with Crizal Prevencia£335£395 - £455
Essilor Varilux Physio 2 Airwear Polycarbonate (1.59) with Crizal Prevencia£335£395 - £465
Essilor Varilux Physio 2 Stylis (1.67) with Crizal Prevencia£365£425 - £495
Essilor Varilux Physio 2 Lineis (1.74) with Crizal Prevencia£395£450 - £515
Essilor Varilux S Design (1.50) with Crizal Prevencia£320£395 - £495
Essilor Varilux S Design (1.60) with Crizal Prevencia£350£435 - £495
Essilor Varilux S Series Airwear Polycarbonate (1.59) S Series with Crizal Prevencia£350£425 - £490
Essilor Varilux S Design Stylis (1.67) with Crizal Prevencia£385£465 - £520
Essilor Varilux S Design Lineis (1.74) with Crizal Prevencia£420£550 - £599
Essilor Varilux X Design Orma (1.50) with Crizal Prevencia£350£445 - £485
Essilor Varilux X Design Ormix (1.60) with Crizal Prevencia£380£450 - £499
Essilor Varilux X Series Airwear Polycarbonate (1.59) S Series with
Crizal Prevencia
£380£460 - £485
Essilor Varilux X Design Stylis (1.67) with Crizal Prevencia£405£470 - £510
Essilor Varilux X Design Lineis (1.74) with Crizal Prevencia£450£520 - £560
TRANSITIONS VARIFOCAL LENSES Available in Brown or Grey and include Anti - Blue Light ProtectionOur Anti-Blue coatings are infused with the precise balance of ocular lens pigment and melanin to help defend your eyes against harmful blue-violet light spectrums both indoors and out. Further, such lenses effectively soothe tired, strained eyes and may 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 Transitions Premium Wide Vision (1.50) Standard Lenses£205£265 - £325
Anti -Blue Transitions Premium Wide Vision (1.60) Thinner Lenses£265£310 - £395
Anti -Blue Transitions Premium Wide Vision (1.67) Extra Thin Lenses£295£355- £425
Superior Transitions Freeform Digital Varifocal available in Brown or Grey and include Anti - Blue Light Protection.Very Latest, Most Advanced Digital Lenses customized with Digital Precision for each individual prescription. Surfaced front and back to create very comfortable lenses which guarantee
improved accuracy, higher definition and colour contrast, improved reading area, lightweight materials, double asphericity, softer design, scratch and impact resistance.
Our Anti-Blue Coatings are infused with the precise balance of ocular lens pigment and melanin to help defend your eyes against harmful blue-violet light spectrums both indoors and out. Further, such lenses effectively soothe tired, strained eyes and may 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
1.5 Superior Transitions Freeform Digital Varifocal available in Brown or Grey and include Anti - Blue Light Protection.£255£315 - £425
1.6 Superior Transitions Freeform Digital Varifocal available£295£365 - £410
1.67 Superior Transitions Freeform Digital Varifocal available£315£395 - £460
ESSILOR STANDARD TRANSITIONS VARIFOCAL LENSES with Crizal Prevencia.Standard Transitions Lenses are so practical as they go dark in the sunshine. They don't go quite as dark as sunglasses but offer very good protection in the sun. Only down side is they don't go very dark in the car for driving. See XTRActive lenses as they will darken in the car as well as darken in the sun.Available in Grey,Brown or Granite Green Colours
Essilor Varilux Comfort New Edition Transitions Orma (1.50) with Crizal Prevencia£305£359 - £430
Essilor Varilux Comfort New Edition Transitions Ormix (1.60) with Crizal Prevencia£345£385 - £445
Essilor Varilux Comfort New Edition Airwear Polycarbonate Transitions (1.59) with Crizal Prevencia£345£389 - £460
Essilor Varilux Comfort New Edition Transitions Stylis (1.67) with Crizal Prevencia£405£475 - £495
Essilor Varilux Physio 2 Transitions Orma (1.50) with Crizal Prevencia£335£399 - £445
Essilor Varilux Physio 2 Transitions Ormix (1.60) with Crizal Prevencia£365£425 - £485
Essilor Varilux Physio 2 Airwear Polycarbonate Transitions (1.59) with Crizal Prevencia£365£429 - £520
Essilor Varilux Physio 2 Stylis Transitions (1.67) with Crizal Prevencia£395£459 - £550
Essilor Varilux Physio 2 Lineis Transitions (1.74) with Crizal Prevencia£420£485 - £565
Essilor Varilux S Design Orma Transitions (1.50) with Crizal Prevencia£375£430 - £565
Essilor Varilux S Design Ormix Transitions(1.6) with Crizal Prevencia£399£449 - £569
Essilor Varilux S Design Airwear Polycarbonate Transitions (1.59) with Crizal Prevencia£399£455 - £575
Essilor Varilux S Design Transitions Stylis (1.67) with Crizal Prevencia£435£475 - £589
Essilor Varilux S Design Transitions Lineis (1.74) with Crizal Prevencia£465£485 - £599
Essilor Varilux X Design Orma Transitions(1.5) with Crizal Pevencia£350£425 - £470
Essilor Varilux X Design Ormix Transitions (1.6) with Crizal
Prevencia
£380£435 - £490
Essilor Varilux X Series Airwear Polycarbonate Transitions (1.59) with Crizal Prevencia£380£425 - £495
Essilor Varilux X Design Transitions Stylis (1.67) with Crizal Prevencia£405£459 - £505
Essilor Varilux X Design Transitions Lineis (1.74) with Crizal Prevencia£450£495 - £560
ESSILOR XTRActive TRANSITIONS VARIFOCALS with Cryzal PrevenciaXTRActive Lenses: These lenses have a permanent very light tint and work very well behind a car windscreen giving excellent sun and glare protection while driving. Proven to be outstanding lenses for anyone who is light sensitive. A must for anyone who drives for a living as they will darken to sunglasses while driving.An excellent choice of lenses for anyone who drives frequently and also uses the computer for several hours a day.
Available in Grey, Brown or Granite Green.
Essilor Varilux Comfort XTRActive Transitions Orma (1.50) with Crizal Prevencia£315£395 - £425
Essilor Varilux Comfort New Edition XTRActive
Transitions Ormix (1.60) with Crizal Prevencia
£355£405 - £475
Essilor Varilux Comfort New Edition XTRActive Transitions Stylis (1.67) with Crizal Prevencia£415£480 - £515
Essilor S Design XTRActive Transitions Orma (1.50) with Crizal Prevencia£399£470 - £525
Essilor S Design XTRActive Transitions Ormix (1.60) with Crizal Prevencia£430£510 - £525
Essilor S Design XTRActive Transitions Airwear Polycarbonate (1.59) with Crizal Prevencia£430£515 - £535
Essilor S Design XTRActive Transitions Stylis (1.67) with Crizal Prevencia£460£530 - £585
Essilor S Design XTRActive Transitions Stylis (1.67) with Crizal Prevencia£520£580 - £595
Essilor X Design XTRActive Transitions Orma (1.50) with Crizal Prevencia£435£515 - £560
Essilor X Design XTRActive Transitions Ormix (1.60) with Crizal Prevencia£455£525 - £570
Essilor X Design XTRActive Transitions Airwear Polycarbonate (1.59) with Crizal Prevencia£455£530 - £580
Essilor X Design XTRActive Transitions Stylis (1.67) with Crizal Prevencia£485£540 - £589
Essilor X Design XTRActive Transitions Lineis (1.74) with Crizal Prevencia£520£585 - £615
Polycarbonate XTRActive lenses are not availabe.