Laser Study Guide Flashcards
What term refers to the vaporization, cutting, or removal of a portion of the epidermis and/or dermis?
Ablation
What do photons do?
Travel at the speed of light in the form of a wave
What term refers to light energy that is “in phase”?
Coherent light
What aspect of a laser determines the type of chromophore with which the light will react?
Color
What is NOT one of the common chromophores in the body?
Lymph
What is NOT one of the four tissue effects of lasers?
Collection
What type of surface poses the greatest potential safety hazard when using lasers?
Flat and smooth
What is the most commonly-reported hazard for those working with laser devices?
Eye injuries
What are lasers usually named in reference to?
Their medium
What term refers to the energy of a pulsed laser beam?
Fluence
Thermal relaxtion time is the amout of time necessary for a chromophore to lose ___ percent of the heat produced by the laser.
More than 50
What unit of measurement is used to measure energy fluence in pulsed lasers?
Joule
What term refers to the rate of energy being delivered to tissue by a laser light source?
Power density
What body determines who can use a specific type of radiation emitting electronic device?
State regulatory agency
What term is used to refer to the entire laser apparatus used in a health care facility?
Healt Care Laser System (HCLS)
What statement about the door to the laser room is correct?
It should be closed but unlocked whenever the laser is in use
What effect can the lens in the eye have on a laser’s energy?
Magnify its intensity by as much as 100,000 times
Most laser eyewear has an optical density level of ___ for visible and infrared wavelengths of light.
4-8
What statement about operating laser equipment is correct?
You should document all problems with the device in your service records.
What should clients do during laser treatments to help prevent a fire?
Refrain from placing anything between the laser device and area of treament.
What is NOT one of the administrative practices mandated by American National Standards Institute (ANSI)?
Conducting monthly competency skills checks of the laser-trained staff
What happens to cells when they undergo a photothermal tissue reaction?
They are destroyed
What is NOT one of the purposes for which CO2 and Er:YAG lasers were traditionally used?
Hair removal
What is the average surface coverage per treatment when using a Fraxel laser to treat photo-aging or acne scarring?
20%
What is one of the main factors to consider when determining whether photomechanical laser therapy is appropriate for a client?
Client’s tendency for wound healing
What are Q-switched lasers commonly used for?
Treating pigmented lesions
What is a diode laser with a wavelength of 800 nm used for?
Hair removal
What type of laser is commonly used to treat vascular and pigmented lesions?
Pulsed Dye
What are Alexandrite Q-switched lasers commonly used for?
Tattoo removal
What is a quality of intense pulsed light (IPL)?
Polychromatic
When should double and triple pulses be used when using IPL?
When treating pigmented lesions
What is NOT a method of skin cooling used with IPL?
Submerging the treatment area in water during treatment
What term refers to a current that flows on a path of least resistance between positive and negative electrodes placed at opposite ends?
Bipolar radiofrequency
What type of LED is used for treating hyperpigmentation?
Green, 525 nm +/- 10 nm
What is NOT a benefit of LED rejuvenation?
Stimulation of hair follicles
