light therapy Flashcards
what happens if light hits the air
it loses its strength
name for intensity
jules
name for power
watts cm2
standard tx parameter
3 jules takes 15 sec
tx time 1-5 mins max
what determines length of tx
power
wavelength determines what?
depth of penetration
absorbtion of light
other names for light therapy
LLLT
phototherapy
light therapy
monochromatic infrared energy
light therapy is effective for tissue repair related to
skin wounds ulcers ligaments tendon ruptures bone and dental tissue
light ther is effective for most types of pain, such as
carpal tunnel neck & back pain shingles tmj pain post herpetic neuralgia
light ther does what to metabolism
increases it
light ther promotes
inflammation- speeds up the process
fibroplasia- increase insize & number of fibroblasts
neoangionesis- formation of new blood cells
collagen synthesis
relative contraindications
cancer
direct irradiation of the eyes
tx of pts w/idiopathic photophobia or abnormally high sensitivity to light
pts that have been pre tx w/ one or more photosensitizers
direct irradiation over fetus or the uterus during pregnancy
“ “ of the thyroid & endocrine gland
growing children - epiphyseal plates
photochemistry of light
starts with-light (photons) applied to tissue
then-absorbtion in the mitochondria & cell membrane by chromophores
-elev of ATP synthesis
-DNA & RNA synthesis, protein synthesis, mitosis, & cell proliferation
-tissue repair
light must be absorbed for what to take place?
photochemistry
therapeutic window of light
610-1100 nm
blue light
healing light 400-500 nm superficial tissue acne staph mrsa strep
red light
630-660 nm
promotes collagen and elastin formation
healing in wounds, cuts, scars, trigger and acupuncture points, and is particularly effective in treating infections
near infrared
700-1100 nm
benefits are same as red, but penetrates deeper
light can penetrate…
1-2 inches
