If you are one of the millions of people that use an iPad, tablet, or e-reader, you may be having some problems. Recent studies have been showing that intensive use of these devices, are causing headaches, eye strain, dizziness, and insomnia.
Why? Well it has to do with a specific part of the blue light spectrum that are emitted by these devices-
"Blue light is that light with wavelengths in the 500nm to 381nm range. Both blue light and UV‑A are sometimes referred to as "near UV," but for purposes of this report, "near UV" refers to blue light" -Elaine Kitchel, M.Ed. [See more resources at the bottom of this page.]
We have known for a long time that UV-A and UV-B light can be physically harmful. Now there is some data that suggest that "Near UV-A" can cause problems running from headaches and insomnia to possibly damaging your eyes.
If you are having blue light problems, we now offer 2 solutions, Mojo BluBlock Tints and Mojo BluBlock AR anti-reflective coating. You can get these tints or coatings with or without a reading power. (No reading power needed? Select "Plano 0.00" for each eye.)
1. Mojo BluBlock Tints. (Available in 3 Colors) We have developed perfect blue light blocking tints that filters out all Near UV-A, UV-A, and UV-B, and with our great collection of frames you have the perfect pair of Monitor Reading Glasses. Like most of our readers, you can select from no power to +4.00 in either eye. The lenses are aspheric polycarbonate with scratch resistance.
Tint Depths: 15% or 30% for indoor use, 45% or 60% for outdoor use.
2. Mojo BluBlock AR Coating- An alternative to having a tint. Mojo BluBlock AR is our new premium anti-reflective coating with a built in filter that blocks out unwanted blue light (Near UV-A) from computer screens, iPads and tablets. There is no tint in the lenses. They are super clear aspheric polycarbonate and include scratch resistance and a hydrophobic coating that makes them easy to clean. (Please note that we cannot combine AR coatings and tint.)
MojoBluBlock Tints vs. Mojo BluBlock AR - Both options filter out Near UV-A, the unwanted part of the blue light spectrum, as well as UV-A and B. The amber tint is particularly good for night reading as it increases contrast. The other tints work well to dampen glare. The BluBlock AR has no tint and is very clear. It reduces reflections and is a great alternative for folks that don't want a visible tint.
Choosing the right power- Computer Reading Glasses vs. Monitor (tablet) Reading Glasses
Monitor (tablet) Reading Glasses- Most people read their tablets or iPads at 12-14 inches away. Choose your up-close reading power.
Computer Reading Glasses- A typical computer user views the screen at about arm's length. Choose half of your up-close reading power. Ex: +1.50 for up close reading, choose +0.75 for computer use.
No Reading Power- Select Plano 0.00 for each eye.
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Mojo BluBlock Reading Glasses - Powers from zero to +4.00 in either eye with a 15% Mojo BluBlock Tint available in amber, brown or gray. Mojo BluBlock AR is available as an alternative to the tint for an additional $5.00.
Tinted Reading Glasses - Powers from zero to +4.00 in either eye. All 3 Mojo BluBlock tints are an option from 15 to 60% tint depth as well as non-blue block pink and blue.
Bifocal Reading Glasses - No power at the top and the same power each eye at the bottom from +1.00 to +3.00. All 3 Mojo BluBlock tints are an option from 15 to 60% tint depth as well as non-blue block pink and blue.
Computer Bifocals - Arms' length computer power at the top with up-close reading power at the bottom. You can either get these with an AR Anti-reflective coating (not blue block) to cut computer glare or our Mojo BluBlock Tint in amber or brown in a 15% or 30% tint depth.
Computer Reading Glasses- Our computer reading glasses include our Mojo BluBlock AR Coating. These are single vision readers.
Can Blue Light Actually Damage My Eyes? According to several studies, there is a strong possiblity that intensive, blue light (Near UV-A) exposure, can possibly cause retinal damage and senile macular degeneration. Some people are more at-risk than others, especially the young.
How do Blue Light Issues relate to Computer Vision Syndrome? Computer Vision Syndrome (CVS) is a grouping of visual problems related to issues like glare, and extended focussing on one set point, a computer screen. The glare issues can be resolved with Anti-reflective computer screens or covers, or eyeglass lenses with anti-reflective coatings. The other issue is related to your eyes' ability to "accomodate" at different viewing distances. (If you stare at a pencil at 20 inches in front of your eyes for 8 hours a day, I can guarantee that you will eventually have problems shifting focus to nearer and farther objects.) The solution to CVS is Computer Reading Glasses with an AR Coating or Computer Bifocals with AR Coating, for people that require a computer distance reading power and a near distance power.
I think that "Blue Light" issues will eventually be included as a part of the syndrome, in "Computer Vision Sydrome".
I experience these Blue-Light problems, especially when reading at night. This is a CVS and blue light issue. From my experience, if you are viewing any source of direct light from TV screens, computer monitors, and hand helds like cell phones, iPads, and tablet devices, you need to also have an extra light source behind you and behind that light source.
That means having a light source behind you like a reading lamp and a source of light behind what you are viewing like a light on in a hallway or another lamp. Yes, I know that means you are going to irritate anyone trying to sleep with you. (Sorry!)
What About E-Ink Screens? I was an early adopter of the Kindle and I have to say, it did what it did very well. I love matte screens but hate the very low (no) value internet experience. In daylight, the Kindle was readable indoors and outside with no eye strain and absolutely no glare outside. It was very light weight and comfortable to hold. The problem was that in order to read at night, I had to put it in a cover and attach a book light which trippled the weight, making it uncomfortable to hold for long periods.
Here's the thing- as far as CVS and blue light, and their related vision issues, there is no evidence that E-Ink screens are any better than LED screens.
Latest Customer Reviews for Mojo BluBlock-
"The most recent pair I got from you guys I added the Mojo Blue Blocker AR coating - what a difference - having had cataract surgery with multifocal lenses I can read fine and see distance. But when I work on my large computer screen at home it's about 2.5 - 3 feet away which is my dead spot. The first pair (once I got the power straight) caused some fatigue and strain, but when I got the last pair with the coating, wow! I can sit all day in front of the screen without any problems. Great glasses. Thanks!!" -Alan B.
"I have been using drugstore readers now for about 3 years. I am one who never had to wear glasses and never wanted to. However age has other plans. Since I love to read I had to give in. I found that after a month or so, my readers would start to fog or just not work as well. I was having a lot of eyestrain from forcing my reading by squinting or moving my book back and forth until I had no choice but to buy yet another pair."
"After a couple of years, I started having a harder and harder time reading on the computer. (Standard desktop). I,unfortunately, started slipping on my readers thinking this would help. Bad, Bad, decision! I soon could not read the computer without the readers. Then, my eyestrain, headaches, dizziness, exploded. I tried going to two diffferent eye doctors. Each told me different things, patted me on the head, and sent me on my way. Needless to say, I was very very frustrated."
"I began an online search to help myself discover a solution. I soon learned that normal reading uses one's near vision and computer reading
uses one's intermediate vision. By using my readers for both, I was confusing my eye muscles. The strain this put on my eyes was what was contributing so much to my problems. I also learned that drugstore readers DO NOT use optician quality lenses. This is why they do not last and are ultimately harmful to your eyes."
"I then discovered readingglassesetc.com. Through several very informative email exchanges, I learned that they had several quality options for me. I tried bifocal readers, mojo bluebock monitor readers and AR readers the latter two both with computer intermediate vision. This I was informed is 1/2 of your near reading magnification. For me this is a +1.25. All three had high quality frames and lenses. My final personal choice was the AR (anti reflective) readers. Just trying these for 2 days allowed me to discern a drastic difference in clarity and brightness. I have had them for about a week now, and I no longer am having any headaches!!"
"The mojo blublock monitor readers are also excellent. I do not use a smart phone, or a tablet, or a laptop, but both my husband and son in law do. We all three noticed an amazing difference when viewing each of these items through the mojo lenses. They have done an excellent job in creating a lens coating that decreases the blue light from back lit items without interfering with one's ability to clearly see print, pictures, and movies for extended periods of time. I believe these are a must for anyone who uses handheld back lit devices. We all only have one set of eyes, and in today's world, taking care of them has never been more important."
"The folks at Reading Glasses Etc have done an amazing job with keeping up with technology and offering quality well made eyewear solutions for a wide variety of needs at a very reasonable price.I believe they hold themselves to a high standard and provide excellent personal customer service. You will not regret making your purchase with them."
"I truly appreciate the help and advice. I am enjoying my computer readers and can't wait to get my regular readers."
"Mojo BluBlock Tint: These are amazing in my opinion.
The 15% Blue Block tint depth gives you just enough tint to block that blue haze that is all around us during sunny bright day, or if you sitting in a front of a laptop, or holding a tablet. I did not notice that blue haze that outdoor offers until I wore the these glasses for a while. Not only do they block the haze but they make everything sharper, and colors are little stronger and they pop. They don't do much difference indoors as far as looking around, but they help with looking at laptop or watching tv, or reading e-book on my cellphone.
The 30% Blue Block tint works just as well as 15% but little darker. It does change some of the colors I see."
The Effects of Blue Light on Ocular Health - Elaine Kitchel, M.Ed.
Blue Light Disturbs Sleep... -Washington Post
Blue Light Has A Dark Side -Harvard Health Publications
Log Off Before You Nod Off -The Guardian
The Lowdown On Blue Light -Review of Optometry
All prices are in USD