Is the myopia therapeutic apparatus useful?
Myopia prevention and control is a long-term project. It must be controlled until adulthood, when the eyeball stops developing, and its degree is basically stable. First of all, we must know that myopia is irreversible. This is a scientific situation. Any so-called therapeutic apparatus cannot treat true myopia. Pseudo-myopia may be effective. However, pseudo-myopia only accounts for a very small part of the myopic population. The myopia treatment instrument can be used to slow down the development of myopia, has a certain health care effect, relieves eye fatigue, and has a certain effect on the treatment of pseudo-myopia, but it cannot fundamentally solve myopia.
Which myopia treatment device is better
I. Relaxation adjustment class myopia device
1 , Theoretical basis: “The theory of accommodation spasm” means that myopia is caused or aggravated by too much “seeing near”. When the human eye sees near, the eyes will reflexively adjust, which first causes accommodation spasm myopia, and then turns into true myopia.
2. The mode of action of the instrument: eye acupoint massage, vibration, heat therapy, magnetic therapy, electric acupuncture, etc. Some Chinese medicines such as musk and mint are added to improve the comfort after use.
3. Experimental study: Newborn monkeys and other animals were put into a 40cm diameter bucket to limit their ability to see far and only “see near”. After several months, high myopia occurred, which proves that near-sightedness can cause myopia. However, further research found that after cutting off the nerves involved in the regulation of seeing near, seeing near can still cause myopia. Prompt accommodation spasm is not the main cause of myopia. Therefore, the theory of myopia onset regulation has been basically denied in recent years.
4. Clinical application effect: Most of the above-mentioned myopia treatment instruments based on the principle of adjustment theory have a certain short-term effect of improving vision, but the long-term effect of preventing and controlling the occurrence and development of myopia is almost 100% ineffective.
5. Future Prospects: Since the adjustment theory has been denied by a large number of animal experiments and clinical observations, this type of myopia treatment device belongs to the obsolete type of myopia device. But it can be used to prevent eye fatigue or assist the use of other types of myopia devices.
Second, the adjustment sensitivity class myopia device
1. Theoretical basis: “the theory of adjustment lag” (ie, the theory of reduced adjustment sensitivity): the long-term view of the human eye Closeness can lead to a decrease in the adjustment sensitivity, which is manifested in that the focus of the object image lags behind the retina when looking at the near distance, resulting in hyperopic defocus, which can induce the length of the eye axis to increase by about 300 degrees of myopia for every 1mm of length. Training to improve the sensitivity of eye accommodation can prevent the occurrence and development of myopia.
2. Mode of action: use the far-near moving light spot to attract the intraocular lens to thicken and thin the lens. The myopia sensitivity telephoto lens also has the functions of visual field exercise training to prevent form deprivation, and electric acupuncture stimulation of ear and eye points to improve eye function through meridians.
3. Clinical experimental research: A number of clinical studies found that most of the students who developed myopia faster did not regulate spasm but lag in regulation. Soviet scholars observed a large number of students who had daily conditioning training and found that the incidence of myopia after a few years was only 1/10 of the untrained ones. Accommodative lag is essentially a hyperopic defocus phenomenon (that is, the focus of the object image falls behind the eye). Animal experiments have shown that hyperopic defocus can cause the eye axis to grow backward and increase by about 300 degrees of myopia for every 1mm of length.
4. Development trend: It can be used as an alternative to eye exercises to prevent the occurrence of myopia in students, and can be used to slow down the development of myopia, especially the development of myopia over 400 degrees.
Third, hyperopia and defocusing type myopia instrument
1. Theoretical basis: “form deprivation” theory and “defocusing” theory, that is Near vision can cause visual deprivation and hyperopic defocusing. The closer you look, the more severe this deprivation or defocusing, which can induce biochemical changes in the eye and lengthen the axial length of the eye, leading to the occurrence and development of myopia.
2. The mode of action of the instrument
(1) Provide hyperopia or virtual hyperopia mirror: change near vision into far vision, thereby offsetting near vision, the main cause of myopia;
(2) Provide hyperopia defocusing lens: produce positive defocusing effect, thereby blocking the onset and defocusing links of myopia and preventing the development of myopia;
(3) Provide adjustment sensitivity and visual field sensitivity Training: Block the adjustment lag and defocus links and form deprivation links in the onset of myopia, so as to prevent the occurrence and development of myopia, and automatically distance (defocus) mirrors.
3. Clinical observation: hyperopia defocus lens (ie telephoto lens) can effectively control the occurrence and development of myopia in 30% to 87% of students. The average efficiency is above 80%.
4. Development trend: hyperopia defocus lens (ie telephoto lens) is the mainstream myopia treatment instrument to control the occurrence and development of students’ myopia in the future.
Declare: The above methods are derived from the program system index or shared by netizens. They are for your reference only and do not represent the research views of this website. sex and authority.
