Children's myopia and amblyopia light and shade training instrument visual function training instrument visual acuity recovery instrument

  We are the Institute of vision technology, a manufacturer mainly engaged in the production, research and development, customization, OEM and complete supply of vision rehabilitation equipment
Many brands and enterprises customize products and OEM products here& ldquo; See clearly ” Brand light and shade training instrument is a new kind of special instrument that can be applied to hospitals, families and professional vision correction institutions
Its basic principle is to use the light wave with adjustable intensity similar to natural sunlight to train the eye's response to the light and shade environment through a special illuminant, so as to exercise the iris sphincter Welcome to Shenzhen for more information *: http://www
kandeqing
com  ; Working principle of a light and dark trainer when we enter a dark place from a bright place, our eyes will suddenly see nothing
It takes a while to slowly adapt and gradually see things in the dark
This process takes about 20 to 30 minutes to completely restore normal vision
During this process, the retina's sensitivity gradually increases, which is the adaptation process of dark adaptation, that is, the adaptability of the retina to the dark When we finish watching the movie and come out of the cinema, in the bright sun, you feel the sun is dazzling and can't open your eyes
It takes a while to see the surrounding scenery
This process is just the opposite of dark adaptation, which is called bright adaptation
Feeling strong light is the responsibility and function of cone cells, also known as bright vision or daytime light perception From the dark to the bright, under the stimulation of strong light, the cone cells in the retina immediately put into work
At the beginning, there were few cone cells working, and the eye was also very sensitive to light stimulation, so I felt that the light was dazzling, and the surrounding scenery could not be seen clearly
But in a very short time, the cone cells are put into work, and the sensitivity of the eye to light is reduced
At this time, it can adapt to strong light, and it is normal to see objects
The photoreceptor pigment of cone cells regenerates rapidly, and its regeneration process is opposite to the dark adaptation process of rod cells, that is, its sensitivity decreases with the increase of exposure time
Therefore, the sensitivity of bright adaptation decreases rapidly in the first few seconds, and then slows down
The process of bright adaptation can be completed in about 1 minute Generally speaking, if the lighting condition of the target is slightly higher than the adaptive light level of the eyes, the visual function is the best
Good central vision under light adaptation includes form vision and color vision
After adjustment in the low lighting environment, the eyes that have adapted can also adapt quickly if exposed to the extremely bright light in a very short time, but after the flash irradiation, the eyes will be in a very high bright adaptation state
At this time, returning to the low lighting environment, the visual function will be greatly reduced and may be temporarily lost
This temporary decrease in light sensitivity caused by high-intensity flash is called flash blindness We all have this experience
When taking photos in the room, the flash light flashes into your eyes, and then you feel that your eyes are dark
It takes a while to see the scenery clearly
The stronger the intensity of the flash, the longer the recovery time
It takes more than half an hour for the sensitivity to return to normal
According to this characteristic of eyes, foreign countries have developed a kind of flash bomb to deal with criminals
The brightness of this kind of flash bomb is much stronger than that of the flash lamp
Under the stimulation of a short extremely strong light, the criminals' eyes are dark and they can only be caught with their hands tied
Second, the function of the light and dark training instrument: 1
Improve the softness, contractility and magnification of the pupil sphincter and dilator; Solve the problem of slow response of cone cells
It has obvious adjuvant effect on myopia and amblyopia
Activate retinal photoreceptors and cone cells, stimulate the visual system, and improve iris responsiveness; 3
Train the sensitivity of the sympathetic nerve, improve the ability of light adaptation and dark adaptation, and improve the ability of visual clarity; 4 for those with myopia, decreased vision and poor brain fusion, afterimage training should be implemented to improve brain fusion ability
3
The training method requires the trainer to keep close to the window and fix the headband on the head
Insist on eye opening training, no matter how strong the light or how unfit the eyes are, we should try to feel the stimulation of light on the eyes
? Training time: 8 minutes? Training posture: sitting, eyes open, looking directly at the light source (it has been atomized, not dazzling)
　? It is required to stick the eye mask tightly, and do not let the external light enter the eye mask IV
operating instructions 1
Turn on the power (12v/1a), press the switch button, and the instrument starts Schematic diagram of light and shade meter button:   2 time set the interval between light and shade to 8-10 seconds, that is, 8 seconds on and 8 seconds off
Before leaving the factory, it has been set that the length of one training is about 6 minutes
Press the reset button to restart the machine and restart the timing
3
No other operation is required for the automatic operation of the machine
Automatically shut down after completion
4
Welcome to Shenzhen for more information *: http://www
kandeqing
com  ; National toll free hotline: 0755-84668558