Accommodative eye strain caused by prolonged viewing of nearby objects
Asthenopia is a troubling condition that lies in the gray zone, which is neither healthy nor sick. Eye pain, visual impairment, stiff shoulders, headache, sluggishness of various parts of the body, malaise, helplessness, and other eye and various systemic symptoms.
Asthenopia includes symptomatic asthenopia caused by conjunctivitis and keratitis, and muscular asthenopia caused by muscle abnormalities around the eyes. Fatigue”.
Here, asthenopia basically refers to "accommodative asthenopia".
"Accommodative eye strain" is caused by "decrease in accommodative function" caused by looking at nearby objects for a long time, by refractive errors such as hyperopia and astigmatism, and by age-related deterioration of eye function. divided into two.
We live in an era where we cannot escape from staring at nearby objects for long periods of time. We are in contact with "screens" such as TVs, personal computers, mobile phones, smartphones, etc. for 2 to 3 hours a day even for a few people, and for more than 10 hours a day.
So why does prolonged contact with a screen cause eye dysregulation?
Light entering the eye first passes through the cornea and then through the pupil to the lens. Here the focal length (focus) is adjusted and an image is formed on the screen (retina) at the back of the eye. This information is transmitted to the brain and is perceived as an image. This is how you "see".
The lens of the eye, the crystalline lens, has the shape of a convex lens, but it becomes thicker when looking at near objects and thinner when looking at far objects.
The tissue called the ciliary body that surrounds the lens functions to adjust the thickness of the lens and focus the image on the retina. The focus is adjusted by moving the
However, if you stare at the screen of your computer or smartphone for a long time, your viewpoint will be fixed at the near point (kinten = one point nearby).
The ciliary muscles become tense and exhausted, resulting in a decrease in the ability to adjust the point of view and a reduction in mesopotential accommodation (the ability to distinguish between near and a short distance). To go. As a result, it became extremely difficult to read the screen, and work efficiency dropped sharply. This condition is eye strain.
Most people think this is just "tired eyes".
What is the difference between eyestrain and eyestrain?
Fear of eye strain causes stiff shoulders, headaches, and loss of concentration.
Eye strain is just temporary eye fatigue.
For example, if you read a book absorbedly for three hours, your eyes will naturally get tired. However, if you just stop there and take a walk or lie down, the tiredness will go away naturally.
On the other hand, asthenopia follows the same mechanism as eyestrain, but it is accompanied by various pathological symptoms that appear repeatedly, and the adverse effects on each part continue and intermittently continue. It is.
Here are the main symptoms of eye strain.
《Abnormal perception of light》
As fatigue accumulates, the same lighting as usual feels abnormally bright. My eyes flicker.
After doing detailed work for a long time, things look hazy, or when you shift your gaze from near to far away, you lose focus for a while and it becomes blurry.
Feeling heavy or dull pain behind the eyes. When you are very tired, you may feel a throbbing pain.
It is a symptom that can be seen almost certainly in people with asthenopia.
When I stare at small characters for a long time, my eyes feel dry. The main cause of this is that the surface of the eyes becomes dry due to the extremely reduced number of blinks.
《Stiff shoulders, heavy head, headache, general malaise, irritability, decreased concentration》
A "severe stiff neck" is a common symptom for most people with eye strain.
Make effective use of eye power to avoid accumulating eye fatigue
As a measure against eyestrain, those who work continuously looking at a monitor screen should do stretching exercises and eye exercises to manage themselves, or obtain permission from their superiors and take a 10-minute break after working for one hour. I need some ingenuity.
- leave work
- get plenty of rest
- get enough sleep
…… If you do these three things, eye fatigue and light eye strain will disappear.
But what do you think? In reality, the majority of office workers and office workers sleep for six hours at most, watching their smartphones on swaying trains even when they are away from work, enjoying TV and video streaming services in a darkened room. The situation is the same for junior high school students, high school students, and university students.
And with this daily repetition, eye fatigue becomes chronic, and transient eye strain becomes genuine. Asthenopia comes from neglecting care and not trying to change lifestyle habits, thinking that it is natural to be able to see.
It's easier to understand if you think of it as "my eyes are tired and my muscles are sore". Normally, when muscle pain occurs after exercising, people try to relieve fatigue and alleviate symptoms by taking rest and massage. However, in the case of tired eyes, it is unlikely that such care will be given. In a state where fatigue is not resolved, it is supposed to continue to overwork and accumulate fatigue.
If you do not recognize eye strain as a scream from your eyes saying, "Let me rest," and take some kind of countermeasure, the symptoms will not only improve, but will only get worse.
That's where the ultrasonic therapy device "I-Power" comes in.
Just apply it lightly to your eyelids for 10 minutes every day. Approximately 24,000 ultrasonic vibrations per second reach the deep tissue of the eye and gently massage. The periapsis fixation is released, the ciliary muscle relaxes, the blood circulation of the entire eye is promoted, and oxygen is supplied to the eye.
If you use iPower every day after returning home or before going to bed, you will notice the freshness of your eyes when you wake up the next morning. It helps to improve your eyesight as well as prevent it from deteriorating.
In today's world where we use computers for long periods of time, we need to protect ourselves.
When we explore the processes that cause eyestrain and asthenopia, we find that the starting line has two things in common: "overuse of the eyes" and "accumulation of fatigue." Let's make effective use of "I-Power" to prevent fatigue from accumulating.