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Vol.5 Story of smartphone presbyopia
Recently, an increasing number of people in their 20s and 30s are suffering from presbyopia-like symptoms such as "the neighborhood looks blurry and the subject is out of focus."
This is a symptom called "smartphone presbyopia" caused by long-term use of smartphones, etc., and by continuing to look at the smartphone at hand (about 20 cm) for a long time, the muscles that adjust the focus of the eyes continue to be tense. It means that it is difficult to adjust the focus.
In the case of "smartphone presbyopia", the symptoms are often temporary, and it is also characteristic that they often recover after sleeping for a day.
This time, I will talk about "smartphone presbyopia" so that you can have a comfortable visual life.
1. What is smartphone presbyopia?
Recently, an increasing number of young people in their 20s and 30s are suffering from presbyopia-like symptoms such as difficulty in seeing nearby areas.
This is a symptomatology called "smartphone presbyopia" caused by long-term use of mobile terminals such as smartphones. Says.
In the case of "smartphone presbyopia" seen in the younger generation, the symptoms are often temporary, and one of the characteristics is that the eyesight is not stable depending on the degree of fatigue.
○ Causes of smartphone presbyopia
When we look at an object, it automatically focuses according to the distance of the object.
It is the "lens" in the eye and the muscles around it, the "ciliary muscle", that are involved in focus adjustment.
By tensioning and loosening the ciliary muscles, the thickness of the crystalline lens is changed to adjust the focus.
In general presbyopia, the focus adjustment function deteriorates due to the hardening of the crystalline lens and the weakening of the ciliary muscle due to aging.
Presbyopia on smartphones is a condition in which the ciliary muscles become stiff and the focus cannot be adjusted properly by continuing to look at a smartphone or the like at a close distance.
When operating a smartphone, the distance is even closer than when operating a computer, and it is easy to stare at a small screen for a long time.
Therefore, it puts a heavy burden on the eyes and is prone to muscle fatigue.
2. Recommended lens for smartphone presbyopia
Nowadays, the chances of seeing smartphones and personal computers are increasing, and the burden on the eyes is a cause of increased eyestrain and eyestrain.
As a cause of eyestrain, when you wear myopia glasses, you can see things in the distance well, but when you focus from far to near, you need more force, and that force is called "adjustment power".
Therefore, if you wear glasses for myopia and keep looking at a short-distance object such as a personal computer or smartphone for a long time, it will cause eyestrain.
When looking at the screen of a smartphone or computer, some people take measures such as removing the glasses or weakening the power of the glasses, but such measures are not only time-consuming, but also to obtain the eyesight that is originally required. can not.
About "Adjustment Support Lens"
An accommodation support lens is a lens that reduces eyestrain.
In order to reduce the strain on the eyes, a point is provided at the bottom of the lens to support focus adjustment when looking near a smartphone or the like.
By looking at objects on the upper surface of the lens when looking at a distance and on the lower surface of the lens when looking at a near distance, focus adjustment is supported and eyestrain is reduced.
Please feel free to inquire about "Adjustment Support Lens".
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