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11 Applications of LEDs
artificial light source in the agricultural field in the 21st century, and show good
development prospects.
11.5 Medical Applications
Thanks to the unique characteristics of LEDs, the device can be used in medical
lighting, surgical lighting and endoscope light source by virtue of its characteristics
of high intensity and high color rendering performance. Meanwhile, with its biological effects recognized by people, LED is also being gradually applied in medical
treatment. In contrast with existing laser treatments, such as weak laser treatment
(physiotherapy, light needle), spectroscopy (photodynamic therapy), light knife treatment (vaporization, coagulation, cutting), LED are anticipated to be used in these
fields thanks to the performance development [24–27]. With the improvement in
LED’s photoelectric conversion efficiency, monochromatic, emission angle, LED
beam characteristics will move closer to the laser beam. Although one is coherent
and the other is incoherent, studies have shown that the coherence and polarization
of the beam have little effect on the results when interacting with organisms. LED
will become the main light source for light therapy.
11.5.1 Treatment of Neonatal Jaundice
Neonatal hyperbilirubinemia (jaundice) is a common disease that can easily lead to
hearing damage. In severe cases, it can cause bilirubin encephalopathy and affect the
quality of life. Conventional light source in the treatment includes mercury vapor blue
light or incandescent lamp. However, the application of such light sources introduces
thermal effects and the addition of ultraviolet rays, which would bring side effects
to the patients. Blue LED produces narrow wavelength exposure, which matches the
absorption spectrum of bilirubin and promotes the decomposition of bilirubin into
biliverdin and non-toxic water-soluble substances out of the body [23].
11.5.2 Treatment of Hemorrhoids
Acne is a common disease in adolescents. The main cause of the disease is the
vigorous sebum division and the rapid proliferation of propionibacterium acnes.
Drug treatment has side effects and the efficacy is limited, while the LED light with
a wavelength of 415 nm produces photochemical reaction and oxygen, kills bacteria,
and achieves therapeutic effect. Treatment of acne with LED is therefore safe for the
patient [24].
11 Applications of LEDs
artificial light source in the agricultural field in the 21st century, and show good
development prospects.
11.5 Medical Applications
Thanks to the unique characteristics of LEDs, the device can be used in medical
lighting, surgical lighting and endoscope light source by virtue of its characteristics
of high intensity and high color rendering performance. Meanwhile, with its biological effects recognized by people, LED is also being gradually applied in medical
treatment. In contrast with existing laser treatments, such as weak laser treatment
(physiotherapy, light needle), spectroscopy (photodynamic therapy), light knife treatment (vaporization, coagulation, cutting), LED are anticipated to be used in these
fields thanks to the performance development [24–27]. With the improvement in
LED’s photoelectric conversion efficiency, monochromatic, emission angle, LED
beam characteristics will move closer to the laser beam. Although one is coherent
and the other is incoherent, studies have shown that the coherence and polarization
of the beam have little effect on the results when interacting with organisms. LED
will become the main light source for light therapy.
11.5.1 Treatment of Neonatal Jaundice
Neonatal hyperbilirubinemia (jaundice) is a common disease that can easily lead to
hearing damage. In severe cases, it can cause bilirubin encephalopathy and affect the
quality of life. Conventional light source in the treatment includes mercury vapor blue
light or incandescent lamp. However, the application of such light sources introduces
thermal effects and the addition of ultraviolet rays, which would bring side effects
to the patients. Blue LED produces narrow wavelength exposure, which matches the
absorption spectrum of bilirubin and promotes the decomposition of bilirubin into
biliverdin and non-toxic water-soluble substances out of the body [23].
11.5.2 Treatment of Hemorrhoids
Acne is a common disease in adolescents. The main cause of the disease is the
vigorous sebum division and the rapid proliferation of propionibacterium acnes.
Drug treatment has side effects and the efficacy is limited, while the LED light with
a wavelength of 415 nm produces photochemical reaction and oxygen, kills bacteria,
and achieves therapeutic effect. Treatment of acne with LED is therefore safe for the
patient [24].