ELECTROLYSIS IBEC+LASER STATE
BOARD PRACTICE TEST QUESTIONS
AND ANSWERS
An increase in fluence equals an increase in what? - Answer-Heat. Resulting in more
damage
The length of time the light/energy is in contact with the target that is measured in
milliseconds (ms): - Answer-Pulse width/Pulse duration
If the time of pulse duration is changed from milliseconds to nanoseconds the laser
is what? - Answer-Q Switched
A Q switched laser is used for what? - Answer-Tattoo removal
Which skin types can tolerate an Alex laser? - Answer-1-4
Which skin types can tolerate a Nd:YAG laser? - Answer-All skin types
Which skin type should only have electrolysis and no laser? - Answer-Type 1
If the pulse width is greater than the thermal relaxation time it results in? - Answer-A
burn
If the pulse width is less than or equal to the thermal relaxation time it results in? -
Answer-Perfect hair removal
Larger structures have __________ thermal relaxation times (TRT) - Answer-Longer
Smaller structures have _______ thermal relaxation times (TRT) - Answer-Shorter
What kind of pulse widths protect the epidermis, penetrate deeper and cool more
slowly? - Answer-Long
Longer pulse widths are for what skin type? - Answer-4-6
What kind of pulse widths are more aggressive and heat up and cool down quickly? -
Answer-Short
Shorter pulse widths are for what skin type? - Answer-1-3
What percentage of follicles are damaged with each laser treatment? - Answer-15%
What is a long-term stable reduction of the growing hairs after a treatment regime? -
Answer-Laser Hair Removal (LHR)
What does the FDA call laser hair removal? - Answer-Permanent hair reduction
,What is the highest setting the skin can tolerate without damage called? - Answer-
Fluence Threshold
What is the highest setting the patient can tolerate without the treatment becoming
impossible called? - Answer-Patient Threshold
The amount of hair per one square centimeter is known as? - Answer-Hair density
The higher the hair density, the _______ the fluence? - Answer-Lower
What percentage of overlapping do you want when doing LHR? - Answer-30%
Darker/tanned skin requires what kind of fluence? - Answer-Lower
What should you never use to clean a patient's skin prior to LHR? - Answer-Alcohol
Pulse duration is measured in what unit? - Answer-milliseconds (ms)
Spot size is measured in what unit? - Answer-millimeters (mm)
Repetition rate is measured in what unit? - Answer-hertz (Hz)
Who is the grandfather of laser and was the first person to use water to cool the skin
during laser? - Answer-Rox Anderson
The formula for fluence is? - Answer-Joules = J/cm2
What kind of lasers allow for selective heating of specific targets? - Answer-Selective
photothermolysis
For deeper laser penetration what should the practitioner do to the laser? - Answer-
Change to a bigger spot size
The primary reason for using cooling devices during laser hair removal is? - Answer-
Allows for higher and more effective fluences to be used while sparing the epidermis
During the initial consultation, the patient should be informed that the process will
take how long for laser hair removal? - Answer-A series of treatments
The principle that says energy must be absorbed by an object in order to produce an
effect is called? - Answer-Grotthuss-Draper law
What is laser light? - Answer-Monochromatic light
Laser is equivalent to which of the following modalities? - Answer-Thermolysis
An element has the ability to produce laser when it is in which state? - Answer-
Metastable state
, What are the positive reactions to the skin indicating a successful LHR treatment? -
Answer-Perifollicular erythema, perifollicular edema
Incandescent light is an example of? - Answer-Incoherent light
A requirement for foot switches that directly pulse the laser is that they be? - Answer-
Hooded
The effect of skin turning red after treatment is referred to as? - Answer-Erythema
An over treatment of the skin characterized by blistering or epidermal separation,
caused by lateral pressure on the skin is known as? - Answer-Nikolski Sign
When tissue has been injured, fluid escapes the blood vessels to surround the
damaged tissue. This is referred to as? - Answer-Edema
The common type of laser used for hair removal is? - Answer-Pulsed
Total destruction of tissue using laser energy is known as? - Answer-photoablation
Laser is ineffective on hair that has? - Answer-Little to no pigment
The energy level of a laser, measured in joules is known as? - Answer-Energy
fluence
Lightwaves that travel in perfect unison, parallel and in the same direction are known
as? - Answer-Coherent light
Optical density labeling on laser safety eyewear refers to? - Answer-the degree to
which a refractive medium retards transmitted rays of light
An allergic phototoxic reaction can occur up to how many hours post-treatment? -
Answer-24
Which part of the body is most vulnerable to laser light? - Answer-Eyes (cornea,
retina, and lens)
What is used to cool the inside of most pulsed lasers during operation? - Answer-
Distilled water
What is the chromophore when using the Nd:YAG laser for hair removal? - Answer-
Melanin in the hair shaft and bulb
What is the FDA class that presents both a direct and reflected hazard? - Answer-
Class IV
What is considered a natural chromophore for hair removal lasers? - Answer-
melanin in the hair shaft and bulb
Hair removal lasers are effective on which types of hair follicles? - Answer-Curved
BOARD PRACTICE TEST QUESTIONS
AND ANSWERS
An increase in fluence equals an increase in what? - Answer-Heat. Resulting in more
damage
The length of time the light/energy is in contact with the target that is measured in
milliseconds (ms): - Answer-Pulse width/Pulse duration
If the time of pulse duration is changed from milliseconds to nanoseconds the laser
is what? - Answer-Q Switched
A Q switched laser is used for what? - Answer-Tattoo removal
Which skin types can tolerate an Alex laser? - Answer-1-4
Which skin types can tolerate a Nd:YAG laser? - Answer-All skin types
Which skin type should only have electrolysis and no laser? - Answer-Type 1
If the pulse width is greater than the thermal relaxation time it results in? - Answer-A
burn
If the pulse width is less than or equal to the thermal relaxation time it results in? -
Answer-Perfect hair removal
Larger structures have __________ thermal relaxation times (TRT) - Answer-Longer
Smaller structures have _______ thermal relaxation times (TRT) - Answer-Shorter
What kind of pulse widths protect the epidermis, penetrate deeper and cool more
slowly? - Answer-Long
Longer pulse widths are for what skin type? - Answer-4-6
What kind of pulse widths are more aggressive and heat up and cool down quickly? -
Answer-Short
Shorter pulse widths are for what skin type? - Answer-1-3
What percentage of follicles are damaged with each laser treatment? - Answer-15%
What is a long-term stable reduction of the growing hairs after a treatment regime? -
Answer-Laser Hair Removal (LHR)
What does the FDA call laser hair removal? - Answer-Permanent hair reduction
,What is the highest setting the skin can tolerate without damage called? - Answer-
Fluence Threshold
What is the highest setting the patient can tolerate without the treatment becoming
impossible called? - Answer-Patient Threshold
The amount of hair per one square centimeter is known as? - Answer-Hair density
The higher the hair density, the _______ the fluence? - Answer-Lower
What percentage of overlapping do you want when doing LHR? - Answer-30%
Darker/tanned skin requires what kind of fluence? - Answer-Lower
What should you never use to clean a patient's skin prior to LHR? - Answer-Alcohol
Pulse duration is measured in what unit? - Answer-milliseconds (ms)
Spot size is measured in what unit? - Answer-millimeters (mm)
Repetition rate is measured in what unit? - Answer-hertz (Hz)
Who is the grandfather of laser and was the first person to use water to cool the skin
during laser? - Answer-Rox Anderson
The formula for fluence is? - Answer-Joules = J/cm2
What kind of lasers allow for selective heating of specific targets? - Answer-Selective
photothermolysis
For deeper laser penetration what should the practitioner do to the laser? - Answer-
Change to a bigger spot size
The primary reason for using cooling devices during laser hair removal is? - Answer-
Allows for higher and more effective fluences to be used while sparing the epidermis
During the initial consultation, the patient should be informed that the process will
take how long for laser hair removal? - Answer-A series of treatments
The principle that says energy must be absorbed by an object in order to produce an
effect is called? - Answer-Grotthuss-Draper law
What is laser light? - Answer-Monochromatic light
Laser is equivalent to which of the following modalities? - Answer-Thermolysis
An element has the ability to produce laser when it is in which state? - Answer-
Metastable state
, What are the positive reactions to the skin indicating a successful LHR treatment? -
Answer-Perifollicular erythema, perifollicular edema
Incandescent light is an example of? - Answer-Incoherent light
A requirement for foot switches that directly pulse the laser is that they be? - Answer-
Hooded
The effect of skin turning red after treatment is referred to as? - Answer-Erythema
An over treatment of the skin characterized by blistering or epidermal separation,
caused by lateral pressure on the skin is known as? - Answer-Nikolski Sign
When tissue has been injured, fluid escapes the blood vessels to surround the
damaged tissue. This is referred to as? - Answer-Edema
The common type of laser used for hair removal is? - Answer-Pulsed
Total destruction of tissue using laser energy is known as? - Answer-photoablation
Laser is ineffective on hair that has? - Answer-Little to no pigment
The energy level of a laser, measured in joules is known as? - Answer-Energy
fluence
Lightwaves that travel in perfect unison, parallel and in the same direction are known
as? - Answer-Coherent light
Optical density labeling on laser safety eyewear refers to? - Answer-the degree to
which a refractive medium retards transmitted rays of light
An allergic phototoxic reaction can occur up to how many hours post-treatment? -
Answer-24
Which part of the body is most vulnerable to laser light? - Answer-Eyes (cornea,
retina, and lens)
What is used to cool the inside of most pulsed lasers during operation? - Answer-
Distilled water
What is the chromophore when using the Nd:YAG laser for hair removal? - Answer-
Melanin in the hair shaft and bulb
What is the FDA class that presents both a direct and reflected hazard? - Answer-
Class IV
What is considered a natural chromophore for hair removal lasers? - Answer-
melanin in the hair shaft and bulb
Hair removal lasers are effective on which types of hair follicles? - Answer-Curved
