Laser test Exam QUESTIONS AND
CORRECT ANSWERS
The term "LASER" is an acronym for: - CORRECT ANSWER Light Amplification by
the Stimulated Emission of Radiation
The very first therapeutic laser (of any class) received 510k market clearance from the United
States Food and Drug Administration (FDA) in _____.And the first class 4 therapy laser
gained FDA clearance in _____. - CORRECT ANSWER 2002 , 2003
In the late 1960's he made the observation that the hair of shaved mice grew back more
rapidly after exposure to low power laser light. As a result he is known as the 'Father of Laser
Therapy'. Who is he? - CORRECT ANSWER Dr. Endre Mester
In 2015 a world-wide panel of experts designated the term ____________ to describe the
therapeutic use of light. - CORRECT ANSWER photobiomodulation, or PBM
Surgical lasers cut tissue; and are used for performing surgery, removal of 'lumps and bumps',
and other ablative laser procedures.What is the mechanism of action for surgical lasers? -
CORRECT ANSWER Photothermal: the laser light has a very high power density and
causes excessive heating of water molecules, which vaporizes the water, "explodes" the cells,
and thus cuts the tissue.
Therapeutic lasers help to enhance tissue healing, and are used for pain management, wound
and injury healing, and other uses.What is the mechanism of action for therapeutic lasers? -
CORRECT ANSWER Both A and C are correct.
Wavelength measures the distance between two corresponding points on adjacent light
waves, for example from one peak to the next, or from one trough to the next.Which is the
proper unit for measuring wavelength? - CORRECT ANSWER nanometers (nm)
Compared to healthy cells, compromised or unhealthy cells in tissues that are injured or
damaged are more 'reduced'. This means that damaged cells will more readily absorb oxygen;
CORRECT ANSWERS
The term "LASER" is an acronym for: - CORRECT ANSWER Light Amplification by
the Stimulated Emission of Radiation
The very first therapeutic laser (of any class) received 510k market clearance from the United
States Food and Drug Administration (FDA) in _____.And the first class 4 therapy laser
gained FDA clearance in _____. - CORRECT ANSWER 2002 , 2003
In the late 1960's he made the observation that the hair of shaved mice grew back more
rapidly after exposure to low power laser light. As a result he is known as the 'Father of Laser
Therapy'. Who is he? - CORRECT ANSWER Dr. Endre Mester
In 2015 a world-wide panel of experts designated the term ____________ to describe the
therapeutic use of light. - CORRECT ANSWER photobiomodulation, or PBM
Surgical lasers cut tissue; and are used for performing surgery, removal of 'lumps and bumps',
and other ablative laser procedures.What is the mechanism of action for surgical lasers? -
CORRECT ANSWER Photothermal: the laser light has a very high power density and
causes excessive heating of water molecules, which vaporizes the water, "explodes" the cells,
and thus cuts the tissue.
Therapeutic lasers help to enhance tissue healing, and are used for pain management, wound
and injury healing, and other uses.What is the mechanism of action for therapeutic lasers? -
CORRECT ANSWER Both A and C are correct.
Wavelength measures the distance between two corresponding points on adjacent light
waves, for example from one peak to the next, or from one trough to the next.Which is the
proper unit for measuring wavelength? - CORRECT ANSWER nanometers (nm)
Compared to healthy cells, compromised or unhealthy cells in tissues that are injured or
damaged are more 'reduced'. This means that damaged cells will more readily absorb oxygen;
