Laser Safety & Protocols Flashcards
7 cards from real CLT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Laser Safety & Protocols flashcards as text
What is the purpose of a laser treatment room's 'controlled area' designation?
Answer: To define the space where laser hazards exist and access must be controlled during operations
A controlled area is a defined zone where laser hazards are present and where access, protective equipment, and behavior are regulated during laser use.
Which of the following skin conditions is an ABSOLUTE contraindication for laser hair removal?
Answer: Active skin infection or open wound in the treatment area
Active infection or open wounds in the treatment area are absolute contraindications because laser energy can worsen infection and impair healing.
What does 'optical density' (OD) on laser safety eyewear indicate?
Answer: The degree of attenuation of laser radiation at a specified wavelength
Optical density is a logarithmic measure of how much a lens reduces laser radiation intensity at a given wavelength; higher OD means greater protection.
A client has a tattoo in the treatment area. How should a laser hair removal technician proceed?
Answer: Avoid the tattooed area entirely during laser hair removal
Laser hair removal over tattoos can cause burns, blistering, and tattoo distortion due to the high absorption of laser energy by tattoo pigment.
What is the 'thermal relaxation time' (TRT) of a target tissue and why is it critical in treatment planning?
Answer: The time for the target tissue to dissipate half its absorbed heat; pulse duration must be ≤ TRT for selective damage
Thermal relaxation time is the time for a target to lose 50% of its peak temperature; keeping pulse duration at or below TRT confines thermal damage selectively to the target.
Which of the following correctly describes a 'spot size' effect on laser penetration depth?
Answer: Larger spot sizes penetrate deeper due to reduced lateral scatter at the beam center
Larger spot sizes reduce lateral scatter effects at the beam center, allowing deeper photon penetration into tissue for more effective treatment of deeper structures.
What action should a laser technician take if an unexpected power interruption occurs mid-treatment?
Answer: Document the interruption, assess the client for any adverse effects, and follow restart protocol
Any unexpected event during treatment must be documented, the client assessed for injury, and manufacturer restart procedures followed before resuming.