Laser/LED/SLED

Question 1

electromagnetic wave behavior

Answer 1

alternating electric and magnetic fields
magnetic and electric fields are perpendicular to each other

Question 2

frequencies detected and not detected by humans

Answer 2

detectable: visible light range by eyes
infrared waves by skin
non detectable: EM waves, UV, xrays

Question 3

types of light therapy

Answer 3

UV
LED
SLED
Laser: class 3b, class 4

Question 4

LEDs produce what kind of light

Answer 4

light emitting diode
produce light in monochromatic/polychromatic wavelengths
visible and infrared light

Question 5

SLEDs produce what kind of light

Answer 5

supraluminous light emitting diodes
like LEDs but produce higher intensity light energy

Question 6

laser diode produces what kind of light

Answer 6

monochromatic, coherent, directional

Question 7

power output: LEDs

Answer 7

5-40 mW

Question 8

power output: SLEDs

Answer 8

up to 90 mW

Question 9

how many emitting points of light are present with LED, SLED, laser

Answer 9

LED and SLED have multiple, 20-30
laser has a single diode

Question 11

dosage of laser

Answer 11

joules per treatment point and per treatment session if multiple points
power (W) x 30 s per diode

Question 12

ultraviolet functions to

Answer 12

facilitates the healing of chronic skin wounds
bactericidal effects
biostimulatory

Question 13

what modalities requires eye protection?

Answer 13

low and high level laser
ultraviolet

Question 14

precautions for LED/SLED

Answer 14

impaired sensation
indirect eye exposure - requires eye protection
dark skin color

Question 15

contraindications for laser/LED/SLED

Answer 15

direct eye exposure
pregnancy
active malignancy area
active hemorrhage
active epiphysis
endocrine system