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The theory behind light therapy is that biological tissues absorb light energy and convert it into thermal and chemical energy, which leads to a chain of chemical reactions in the body.
These chemical reactions are summarised in four types: photolysis, photo-oxidation, photopolymerisation and photosensitisation.
The different wavelengths of light produce different biological effects, which has led to the development of a number of therapeutic methods and instruments that target different wavelengths of light for different diseases.
✅UV rays
UV rays have not been popular with sisters because they darken the skin, but they are an important tool for treating skin diseases.
The narrow-spectrum medium-wave UV rays of 311 to 313 nm and the long-wave UV rays of 340 to 400 nm are uniquely effective for certain skin diseases such as atopic dermatitis and vitiligo.
✅Blue light
Jaundice is common in newborn babies and can lead to hearing impairment and, in severe cases, bilirubin encephalopathy.
Blue light is an important source of light to reduce jaundice in newborns. Blue light changes the metabolic pathway of bilirubin in the newborn's body, thus reducing jaundice.
✅Red light
Red light therapy has a wide range of effects, mainly through the production of photobiological reactions to promote cellular metabolism and improve muscle immunity.
It is commonly used in hospitals for dermatology, surgery, gynaecology, internal medicine, ENT, burns, etc., and is gradually being extended from the medical field to the cosmetic field of life.
✅Infrared
The biological effect of infrared light is mainly thermal, which accelerates blood flow and promotes metabolism and cell proliferation, anti-inflammatory and analgesic effects, and is generally used for health care and rehabilitation of diseases.
🌟Regulating the body's physiological rhythms
By irradiating the photoreceptor cells in the retina of the human eye, it can be involved in regulating the body's alertness, heart rate and body temperature, thus treating seasonal affective disorder.
For example: sleep disorders, eating disorders, mood disorders, etc. The brightness and light can also be adjusted according to the individual needs of the patient, thus achieving relief and treatment of depressive symptoms.
🌟Dental medicine applications
Using low temperature cold light LED light source to whiten teeth, the process does not touch the gums, avoiding the stimulation of the dental nerve during the operation and does not cause any damage to the teeth.
Light therapy can also be used to treat mouth ulcers caused by chemotherapy, allowing cancer patients to get relief from mouth pain and cure ulcers; in addition, LED light source has a simple structure, small size, high portability, good monochromaticity and has a good bactericidal effect, so it can also be used to treat periodontitis.
🌟 Applications in disease diagnosis
LED light source with wide wavelength range, pure spectrum and controllable beam can be used for biological cell in vivo detection and diagnosis, which can reduce the interference of stray light and improve the accuracy of detection and diagnosis, such as for the diagnosis of prostate disease, lumbar disc herniation disease, fundus disease, early gastric cancer, early colorectal cancer, skin cancer, etc., and can be used for the preliminary diagnosis of hereditary and infectious diseases, etc.
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