March 2018: I Guarantee You Want To Read This.....
Welcome to Spring!
Take a look at the glasses your wearing right now...do you REALLY
see clearly? Or are you struggling just a bit to focus?
Look at a book cover or newspaper at a steady distance that APPEARS
clear to you...
Now close one eye, and then the other. Do you see clearly out of both eyes
I suspect the answer is no!
Some might say "oh its just a little, no big deal". My
wife thought that way too a couple of years ago...she was perfectly happy with
her standard Kerko Eyewear glasses, but when I tested her using the process
below, we found out she needed 1.50 in the right lens and 2.50 in the left.
Holy Cow! Her eyes were completely different and she didn't even know it. After
I made her one of the first pair of our Special Kerko Eyewear Reading Glasses,
she exclaimed "I can't believe it!"
You won't believe it either.
Now with her new pair of Special Order glasses, she can see
equally clear with both eyes and is amazed her vision has been so good!
The reason this is important is that your brain favors
the eye that focuses best, the eye with clearest vision at a given distance. That eye is
doing all the work. When one eye does all the work, your vision is slightly
blurred...and fatigue sets in quickly. When both eyes work together, that's
Here's the simple way to know what Diopter(strength)
you need in each lens:
1: With glasses on, hold an open book at a distance
where the text looks most clear and sharp.
2: Verify which eye is clearest reading at this
distance(ie close one eye then the other).
3: With the OTHER eye(the less clear eye), move the book
closer or farther until it comes into focus as clearly as possible.
4: Estimate the distance you moved the book from your
original position, in inches.
A: for each 5 inches you
moved the book closer to you, you will need a lens 0.50 Diopter LOWER than the
B: for each 5 inches you
moved the book farther away, you will need a lens 0.50 Diopter HIGHER than the
Here's the example with my wife....
She put on her glasses (1.50 std readers) and held an open book
about 15 inches from her face. She then closed one eye, and then the next, and
found her left eye had clear vision, but her right eye was still fuzzy.
With her fuzzy eye open (and the other closed), she moved the book
forward and back from the original position and found she had to move the book
about 10 inches further away to see clearly with that eye. So that meant her
right eye needed a Diopter (2 x 5 inches) = 1.00 higher
than her left eye. So I made a pair with the same 1.50 in the left but 2.50 in
the right, and she could see perfectly. FAR BETTER than what she thought
was previously ok.
Kerko Eyewear can help when it comes to special reading glasses,
simply choose the Special Order Computer Glasses or Special Order
Reading Glasses below. Do the test above and then choose which
Diopter you need in each lens, and they'll be built and shipped off to you in a
So the bottom line is...it's important to understand just how good
your vision really is, and whether your current glasses are still the best for
you. If they aren't, you may be losing clarity that you didn't know you had.
October 2017: Improve concentration with the right glasses.....
Welcome to Fall! (though here in Florida its still 85 degrees)
This month we wanted to share some information on how your concentration can improve when you wear the right glasses.
It all really comes down to how well you can see what your looking at.
Lack of concentration is frequently related to the problems with vision. This makes sense since concentration and vision have a lot to do with each other. Vision steers attention in ways that you may not even be aware. You see, 90% of your sensory input is from your eyes. The ability to focus and concentrate on this sensory input has a lot to do with how clear that sensory input is. A fuzzy view of the world is a challenge for your brain to interpret, and is the usually the first thing checked with young people when they don't do well in school.Their eyes are tested to make sure they have good vision, since the inability to see clearly is the #1 physical reason children lose concentration in school. Its really the same for any age.
The fact is, people with visual problems frequently lose their concentration. If you can't see what your looking at, your brain can't focus and process what its seeing, therefore it can't make correct interpretations and decisions about the information it sees.
This is such a common problem because our brain tries to adapt to vision loss when it happens slowly over time. Its easy to miss, and you may not know its happening until you find you can't concentrate well anymore. It's most likely due to your vision!
So take a look at the glasses your wearing right now...do you REALLY see clearly? Or are you struggling just a bit to focus?
Now close one eye, and then the other. Do you see clearly out of both eyes equally?
If the answer is no to these questions, you may need a new pair.
One simple and useful test I've found is to find a pair of good binoculars with focus adjustment. Look through the binoculars without your glasses on, and focus the binoculars on a simple object in your backyard or the street (like a street sign). If you can focus more clearly with the binoculars than your glasses, you know you need new a new pair.
Kerko Eyewear can help when it comes to reading glasses, as we offer the best optical purity for Standard readers, as well as Special Order readers if you need a different Diopter(strength) in each lens.
Why Special Order readers? Most people, as they age, develop a slightly different vision in each eye. I can tell you for a fact that every person I have assessed directly to determine the best Diopter to wear, has opted for the Special Order pair as the best selection. As an example, one customer used to wear our standard 1.75 Diopter readers, and after some simple testing, found that her eyes were actually 1.25 Diopter in the left eye, and 2.50 in the right eye. Now with a pair of Special Order glasses, she can see equally clearly with both eyes and claims her vision has never been so good!
So the bottom line is it's important to understand just how good your vision really is, and whether your current glasses are still the best for you. If they aren't, you may be losing concentration simply due to your eyesight!
September 2017: How eyeglasses actually improve your vision.....
First off, we want to thank everyone for their patience while we recovered from Hurricane Irma here in Florida. We were fortunate to get back on our feet relatively quickly and caught up with orders within a week.
To those affected by both Hurricanes Harvey and Irma, we trust you have weathered the storm in good health. We know there are many suffering with damage and cleanup and our thoughts and prayers go out to you for a speedy recovery.
For September, our newsletter is going to explain why glasses work the way they do and how they actually improve your vision.
Let's start with the eye itself and how it works. I'm going to let the excellent diagrams below do the explaining on anatomy.
So now the key to eyeglasses correcting vision has everything to do with the optics of the eye not being perfectly aligned to present a clear picture onto the retina for processing to the brain. This can be caused by genetics (ie bad vision runs in families), or by damage by injury or illness, or the most common reason being aging.
Aging gradually stiffens the lens of the eye and the supporting muscles struggle to flex the lens for a clear image but simply can't any longer, leaving blurred vision, most typically at shorter distances. The most common symptom of losing near vision and needing corrective reading glasses is that your eyes feel tired after reading or become blurry, and headaches frequently follow. This typically starts in your late 30s or 40s as focusing becomes more difficult, particularly after a long day. The eye is simply too fatigued from trying to focus for long periods of time.
The simplest way to show how eyeglasses correct for blurry vision is the graphic below:
The top part shows an eye struggling to focus but cannot do so adequately. You see, the lines of light should focus on the retina at the back of the eye but do not do so as the cornea and lens can not focus the image clearly.
The bottom part shows the eye with a corrective lens in front that modifies the light entering the eye so that the image is clearly focused precisely at the surface of the retina. This explanation is easy to prove to yourself when you find reading glasses that allow to see clearly. What happens when your vision is clearest? That's when the image is focused perfectly on your retina. Make sense?
July 2017: The #1 Thing That Matters Most!
For everyone who wears glasses....you want them to look nice, have great color, be stylish, etc. BUT....... you probably know by now what matters most....COMFORT.
It's the #1 issue people have with their glasses!
I know what you mean. When I'm in the car I wear driving glasses...and I can't wait to get where I'm going so I can take them off! (hmmm..that might be the next Kerko product line).
Kerko Eyewear reading glasses are designed with **comfort** as the #1 priority.
That's why we call them "The Most Comfortable Glasses on Earth!"
Smooth lines, flexible temples, low profile lenses, and most importantly...LIGHTWEIGHT!
All Kerko Eyewear Glasses weigh less than 1/2 ounce. Nearly all glasses on the market weigh at least double, at 1ounce, 2ounce, or more.
Here is a great example below of Kerko Eyewear Glasses compared to a std eyewear store variety. To be fair, we chose a typical design that was being sold as "lightweight" reading glasses and also made from a plastic material.
To demonstrate the weight difference, we will use something we are all familiar with...pocket change. The equivalent weight of each glasses is represented by the same weight of pocket change.
See the pics below for the comparison.....the typical "lightweight" store glasses on the right weigh _**three times**_ as much(39grams..almost 1.5 ounces) as Kerko Glasses (13grams..less than 0.5 ounce)!
In addition to customers like yourself, we also sell to industrial customers and customer service centers for the #1 reason that they can wear our glasses all day long, and they have done so for years with ZERO complaints about comfort. So rest assured you can wear your glasses all day if necessary and have no reason to take them off.
Comfort of our product is its hallmark feature, and we trust that you believe that as well!
Thanks for reading our July Newsletter and we wish you all a Happy 4th of July Holiday!!
March 2017: What is a Diopter?
"Diopter" is a technical term to represent the 'strength' of your reading glasses.
Let's get the technical side out of the way first....
Diopter = a unit of refractive power that is equal to the reciprocal of the focal length of a given lens. It is thus a unit of reciprocal length. The higher the Diopter, the closer you can focus.
Therefore, the Diopter is really just the 'strength' of a pair of reading glasses (ie 1.00, 2.50, 3.00 etc) to correct for your eye's inability to focus. Simple, right?
Historically, Diopter is the combination of the greek words "Di" (through) and "Optos" (visible).
Two parts of the eye contribute to our ability to focus on an object, The Cornea (the surface of the eye), and the Lens (the major internal part of the eye). The Cornea contributes about 2/3rds of the focusing power of the eye, whereas the Lens contributes about 1/3.
Although the Cornea remains flexible over much of your life, the Lens does not, and gradually becomes more rigid, which in turn diminishes our ability to focus clearly at short distances. By age 50, the ability of the lens to focus has diminished to only about 5% of what we could when we were children.
Losing the ability to focus at short distances is a natural part of aging, and is the reason why we struggle as we get older to focus on small items. Those that work with computers are more affected as they have experienced more strain over time to focus at short distances. Fatigue, headache, and eye strain start to occur before you even realize you are having trouble focusing. Your eyes will keep trying to focus until they just can't anymore!
Therefore, most people in their middle years don't realize they need glasses until they have suffered for some time with fatigue and eye strain, not knowing that this is the cause.
So what does this mean to you, you ask?
When age (or strain) related near focus starts to fail us, we typically need just a small adjustment, something in the range of 0.50 to 1.0 Diopter. That will usually help for 3-5 years, but gradually you will find you need about a +0.50 Diopter stronger after that time, and in fact it runs about +0.50 increase for every 3-5 years as you age. That's just a general rule. Your mileage will vary.
So if you already use reading glasses, and are starting to feel fatigue and eye strain again, or your focus is a little more blurry than it used to be reading a book, then its likely you need a new pair of glasses...with a little stronger Diopter than you have now.
NOTE: Because Diopter is related to distance, some Kerko Eyewear customers own several Diopters, depending on their needs. As I am approaching the golden years, I'll use myself as an example. For computer use (about 24" or arms length distance), I wear a 1.00 pair of Computer Glasses. For newspaper reading (about 18"), I use 1.50 Diopter Standard Reading Glasses. For my smartphone and when I leave the house...like for menus at restaurants(about 12"), I use 2.00 Diopter. And since I have an interest in antique watches, I use a 3.0 Diopter to see those smallest details up close (like a watchspring, just a few inches). So you see, distance matters too when we talk about Diopter. Therefore, the right Diopter for you is really just the strength of the reading glasses you need for the distance YOU need them for.
As a general rule, if you need to focus closer or father 5" from where you normally read, you will need a Diopter +0.50 HIGHER for 5" closer reading, or 0.50 LOWER for reading 5" farther away.
Our Standard and Computer Reading Glasses are also available in "Special Order" version if you know you need a different Diopter in each Lens.
February 2017: Why "Blue Light" is Bad for You!
You might not have heard of 'Blue Light', but its all around you in your home.
Every flat screen TV,
Every computer monitor,
All LED and Flourescent bulbs (CFLs)
Every smartphone and tablet,
......emits Blue Light. And its not a good thing....
**So what is Blue Light?**
Blue Light waves are the among the shortest, highest energy wavelengths in the visible light spectrum. Because they are shorter, these "Blue" or High Energy Visible (HEV) wavelengths flicker more easily than longer, weaker wavelengths. This kind of flickering creates a glare that can reduce visual contrast and affect sharpness and clarity.
This flickering and glaring is one of the reasons for eyestrain, headaches, and mental fatigue caused by many hours sitting in front of a computer screen or other electronic device.
Our eyes' natural filters do not provide sufficient protection against blue light emanating from computer devices. Prolonged exposure to blue light may cause eye damage and contribute to age-related macular degeneration, which can lead to loss of vision.
According to a recent Harvard Study, people who read before bed using a laptop, computer monitor, iPad or similar device find it harder to wake up bright-eyed and bushy-tailed than those who curl up with a printed book. The reason? The blue light emitted suppresses the sleep-promoting hormone melatonin, which controls your sleep and wake cycles, says Robert Rosenberg, DO, FCCP, an Arizona sleep medicine specialist.
A January 2015 study in Proceedings of the National Academy of Sciences summarizes it all: “Evening use of LED light-emitting devices negatively affects sleep, circadian timing, and next-morning alertness.”
LED monitors, tablets, and smartphone screens affect your melatonin at 5 times the rate of normal lighting, due to the high concentrations of blue wavelengths.
Many of us spend the majority of our waking hours staring at a digital screen, whether it's the computer at work, reading a tablet, using our personal smartphone, playing a video game, or just relaxing and watching TV.
**This causes Digital Eyestrain....**
"Digital Eyestrain" is a new term used to describe the conditions resulting from the use of today's popular computer devices.
Digital Eyestrain is a medical issue with serious symptoms that can affect learning and work productivity. Symptoms of Digital Eyestrain include blurry vision, difficulty focusing, dry and irritated eyes, headaches, and neck pain. _**In fact, Digital Eyestrain has overtaken carpal-tunnel syndrome as the number one computer-related complaint.**_
A Harvard medical study states that "High Energy Visible (HEV) blue light has been identified for years as the most dangerous light for the retina. After chronic exposure, one can expect to see long range growth in the number of macular degenerations, glaucomas, and retinal degenerative diseases". And a paper published by the American Macular Degeneration Foundation (AMDF) reports that "the blue rays of the spectrum seem to accelerate age-related macular degeneration (AMD) more than any other rays in the spectrum".
**Who needs protection from blue light exposure?**
We all do. Everyone needs to take precautions against the effects of blue light. Whether we work in an office or just recreation at home...staring at a computer screen, reading a tablet, or texting on our cell phones, we are all being exposed to blue light.
**What can we do about this?**
Adjust the brightness and color of your screen by adjusting the device's control settings.
Clean Your Screen
A dust-free, smudge-free screen helps reduce glare and is easier to see.
Dim Surrounding Lights
Reduce the amount of light competing with your screen.
Adjust Your Screen
Digital screens(Monitors/Tablets/Smartpones) should always be directly in front of your face at a comfortable distance, and slightly below eye level.
Increase Text Size
Increasing text size can help define screen content better and to make reading more comfortable for your eyes.
Limit the Amount of Screen Time
Just two hours looking at a digital screen can cause eyestrain and fatigue.
Wear Computer Glasses
Computer glasses help the eye adjust to computer screens/tablets/smartphones and reduce the effects of Digital Eyestrain.
This is one of the major reasons our Computer Glasses were created.....they filter Blue Light. These are available on our website, and the amber tint and unique Blue Zaio coating was specifically designed to filter Blue Light, improve contrast, and sharpen images.
January 2017: This May Make all the Difference!
We were planning a different topic for our newsletter this month until we received a call two weeks ago from one of our great long term customers (6 years now). Thank you Janice.
She highlighted a topic that we thought we should focus on right now at the start of 2017. I'm sure we have all been thinking of our 2017 resolutions, and I hope one of them has been your health. The expression "health before all" particularly resonates with us as it it is hard to help loved ones in our life without ensuring our own health first. Part of that is ensuring good eyesight.
Janice called to discuss strengths of the lenses. She thought maybe she needed a different strength. It turns out that although she has worn Kerko Eyewear glasses for many years, her eyes still feel tired after a day of work and reading. Not too surprising, we thought...fatigue sets in even at the best of circumstances.
BUT, In particular, she mentioned it was her left eye. It reminded me of my own situation years ago. I bought my first pair of Kerko Eyewear readers in 2010 (and loved them so much I bought the company a couple years later). At first the standard readers worked fine, but then as a few years went by, I realized I had the same issue she had. One eye in particular was more tired (noted by my rubbing of that eye more to relieve the fatigue). I went to the eye doctor and he told me that many people, particularly as we get older, develop different eyesight reqts for each eye. In my case, he found my left eye required a 0.75 Diopter HIGHER than my right eye in order to read at the SAME distance. I now personally wear 2.25Left Lens/1.50Right Lens glasses, and they are perfect for me. We solved her problem too with the same solution (two different Diopters), and now she is delighted.
Stories like this are the reason we started offering our **Special Order** glasses in 2016. These are available on our website, and yes they are a slightly higher price than the standard readers but this is due to additional coordination time needed for the assembly parts and process.
So after reading this, if you think you are experiencing the same situation, we'd like to offer this simple test to see if our Special Order glasses are right for you....
(Disclaimer: nothing substitutes for a proper medical examination by your eye doctor, who can confirm the specific reqts for each eye.)
Step 1: Put on your favorite Kerko Eyewear Glasses, then hold an item with printed text at a distance where the text looks most clear and sharp.
Step 2: Close your right eye. Is the text still clear?
Step 3: Close your left eye. Is the text still clear?
If the answer is no to either Step 2 or 3 it is possible that your eyes require different strengths(Diopters) for reading.
The reason fatigue sets in with this situation is that your brain is favoring the eye that focuses best (ie the eye with clearest vision at that distance). That eye is doing all the work.
Here's a simple way to tell how much one eye may be different:
1: With glasses on, hold a printed text at a distance where the text looks most clear and sharp.
2: Verify which eye is clearest at reading this distance.
3: With the OTHER eye(the less clear eye), move the text closer or farther until it comes into focus as clear as possible.
4: Estimate the distance you moved the text from the original position (in inches).
->A: for each 5 inches closer, you will need a lens 0.50 Diopter LOWER than the current lens<-
->B: for each 5 inches farther, you will need a lens 0.50 Diopter HIGHER than the current lens<-
Example: Janice, our customer above who called us (and let us tell her story)
We walked her through the steps above to see if her eyes needed different strengths(Diopters).
She put on her glasses (1.50 std readers) and held an open book about 15 inches from her face. She then closed one eye, and then the next, and found her left eye had clear vision, but her right eye was still fuzzy.
With her fuzzy eye open (and the other closed), she moved the book forward and back from the original position and found she had to move the book about 10 inches further away to see clearly with that eye.
We calculated that what she really needed was a 2.50 Diopter for her right eye, where the 1.50 on the Left was just fine. We sent her the new pair of 1.50/2.50 readers last week and her response back to us yesterday after trying them on was...."Perfect!". She also noted that her vision was even better now....not too surprising because both eyes are now working together with equal clarity.
If you decide to order a pair of our Kerko Eyewear **Special Order** readers, please note that you must select a Diopter for each lens, and that the Right and Left lens are from YOUR point of view looking THROUGH the glasses (ie right eye, right lens)
Thanks for reading our newsletter this month, and we wish you all the best in 2017!
Nov 2016: Hooray! We have a new Website!
Yes, after 7 years with our old website we have a new one. It's fresh, clean, simple...and best of all the ordering and payment process is far easier (and quicker).
If that isn't enough, we now offer LOWER everyday product pricing. Many of the questions we have received regard the old quantity pricing and how to combine the products. We've made this simpler for everyone with new low everyday pricing. Now you'll know exactly what your paying before you checkout.
In fact, every product combination...whether you buy 1, 2, 4, or 6 glasses, will be as much as 13% less than the prior pricing. Bottom line...all combinations of glasses will save you money from the get go. If you have a coupon, great!...it will be added on top of the existing product discounts. All the way around you will save money and have a simpler, easier website to view and order products.
As you know, we were going to switch from Paypal to a merchant credit card service, but Paypal has recently improved their credit card payment interface so much it's actually easier (for you) than using any other method. If you want to use a credit card, simply click the "Pay by Credit or Debit Card" at the bottom of the Paypal Payment screen that appears when you've completed your ordering. If you have a Paypal account, great!..just log in like you usually do and pay that way. Easy either way.
PLEASE send us a message ("Contact Us" on website) if you encounter any difficulty or have suggestions for improving the website or our products in general. We love to hear from you!!
We will continue to work through the best aspects and features available for our new website, so you may see some tweaks as time goes on...all for the better to serve our valued customers (that's you!).
Kerko Eyewear has been proud to serve you for the last 8 years at trade shows around the country, and on the internet now for 7 years!
We offer Computer Readers from 0.0 Diopter to 3.50 and Standard Readers from 1.00 to 3.50. All of our Reading Glasses weigh less than half an ounce. You may forget you have them on!