Dry Eyes Syndrome: What You Should Know
Updated: February 5, 2026
There are an estimated 40 million people worldwide suffering from dry eye syndrome. Symptoms include eye fatigue and dryness, itching, redness, blurry vision, light sensitivity, and increased irritation from smoke or wind.
The Visual Acuity Test
The visual acuity test is the most common procedure used to measure the clarity or sharpness of a person's vision or to optimally configure eyeglasses to correct refractive errors such as myopia, hyperopia, and astigmatism.
An eye chart called the Snellen chart is typically used by eye specialists to measure visual acuity.
However, standard measures of visual acuity testing (such as the Snellen chart) are not precise enough to measure visual acuity in real time or to assess a person's visual performance in real-life situations such as driving, reading, or computer work. That is why this conventional test cannot identify dry eyes.
In fact, many people who undergo regular vision tests show no signs of problems, even though they experience poor or blurry vision during everyday tasks.
So how can we identify the problem?
Inter-blink Interval Visual Acuity Decay (IVAD) Test
Look at the chart below. This is called the "Landolt C". It is also known as the "Japanese Vision Test".
The Landolt C resembles a ring with a gap, making it similar to the letter C. It comes in various sizes and orientations. Like the Snellen chart, the purpose of this test is to measure visual acuity, and the patient's task is to identify the side on which the gap appears.
However, this time, we’ll be using a latest device that employs the Landolt C but can more accurately measure a person's visual performance in real time (within 1 minute). This is called the Inter-blink Interval Visual Acuity Decay (IVAD) test.
The above chart shows the result of a healthy person's visual acuity test (IVAD) over a 1-minute duration. It indicates that the patient has an average visual acuity value of 1.0 (20/20), which is considered "normal" vision.
Now, look at the chart below:
The above chart shows the result of a dry-eye patient's visual acuity test, which dropped significantly after 40 seconds to a value of less than 0.2, equivalent to a whopping 20/125 vision!
In this result, the patient has an average visual acuity value of 0.4, or 20/50 vision. Normally, you would not see this kind of result if you only performed a standard visual acuity test like the Snellen chart.
Why does the visual acuity value decrease so much in dry-eye patients?
Well, the Inter-blink Interval Visual Acuity Decay (IVAD) test, as the name suggests, measures how a patient's visual acuity declines between blinks over time.
Studies show that dry-eye patients experience faster vision loss between blinks than those without dry eye.
Uneven Tear Distribution Blurs Your Vision
Yes, vision degradation can be caused by uneven tear distribution.
Normally, when you blink, your tears spread uniformly and smoothly across the surface of your eye.
This allows you to see clearly, as the outer layer of your eye surface has no uneven spots.
However, a person with dry eyes has a bumpy eye surface even after blinking.
As a result, light entering the eye scatters, leading to blurry vision.
This condition is widely known as "Dry Eye Syndrome".
Dry Eyes Caused by Mucin Deficiency
Mucin (mucous) is a sticky substance that acts as a lubricant for the eye. Its primary function is to smooth out uneven spots on the eye's surface. However, as we age, not only does tear production decrease, but mucin levels also decline, leading to dry spots on the eye's surface.
Are There New Eye Drops Available to Treat Dry Eyes?
Although artificial tear drops are widely available over the counter, they only act as lubricants and do not address mucin deficiency.
Two types of eye drops, Rebamipide and Diquafosol, are new treatments developed in Japan for dry eyes caused by mucin deficiency. These eye drops stimulate mucin secretion and increase lipid production as well.
Don't Settle for Blurry Vision: Act Now!
If you have passed standard vision tests with flying colors but still struggle with daily eye fatigue and blurriness, you might be suffering from undiagnosed dry eye syndrome or mucin deficiency. While over-the-counter artificial tears can provide temporary relief, they may not be addressing the root cause of your instability. We recommend consulting with an ophthalmologist about these newer mucin-stimulating treatments.
On the other hand, if you are suffering from an eye condition caused by a virus, or if you're experiencing sudden, unexplained vision loss even if your diagnosis shows that the eyes, optic nerves, and brain structures are perfectly healthy, you may be affected by the negative energy. In these cases, the use of our PYRO-ENERGEN machine is highly recommended.
With the right diagnosis and the correct treatment, you can restore your eye health and get back to seeing the world with clarity and comfort.
Junji Takano is a Japanese health researcher involved in investigating the cause of many dreadful diseases. In 1968, he invented PYRO-ENERGEN, the first and only electrostatic therapy machine that effectively eradicates viral diseases, cancer, and diseases of unknown cause.
Click here to find out more: https://www.pyroenergen.com/
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