TEST 2025 LATEST QUESTIONS WITH 100% CORRECT
DETAILED ANSWERS WITH RATIONALLES ALREADY
GRADEA A+
/. Laser stands for what? - Answer-Light
Amplification by
Stimulated
Emission of
Radiation
/.What is the distance measured in nanometers between two peaks or two troughs
known as? - Answer-Wavelength
/.Light of only one color & one specific wavelength is known as? - Answer-
Monochromatic
/.Refraction is also known as what? - Answer-Transmission
/.The process where by a newly created photon of light (generated through
amplification) acquires energy equal to the photons that created it is known as? -
Answer-Stimulated Emission
/.The states of equilibrium or middle state of light - Answer-Metastable State
/.Who theorized stimulated emission? - Answer-Albert Einstein
/.The part of the laser that contains the active medium is called? - Answer-Resinator
cavity
/.What are the states of light in stimulated emission? - Answer-Ground State
Excited State
Singlet State
Metastable State
/.Alexandrite laer is in the visible light spectrum at what wavelength? - Answer-755 nm
/.The Nd:YAG laser falls in the invisible light spectrum with a wavelength of what? -
Answer-1064 nm
/.What type of wave is used in laser hair removal? - Answer-Pulsed wave
,/.A chromophore is also know at what? - Answer-Target
/.The chromophore absorbs what? - Answer-Energy
/.Goggles worn by the patient and practitioner must be approved by which group? -
Answer-ANSI (American National Standard Institute) for Class 3B and Class 4 Lasers
/.Each laser wavelength is what to its machine? - Answer-Specific
/.What are the parameters when doing laser hair removal? - Answer-Wavelength
Spot Size
Fluence
Pulse Width
/.Pulsed lasers allow for selective heating of specific targets, this is also known as? -
Answer-Selective Photothermolysis
/.The rate/amount of energy delivered within a given area is known as? - Answer-
Fluence
/.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