Light Therapy Equipment & Technology Flashcards
6 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 6 Light Therapy Equipment & Technology flashcards as text
What is the primary advantage of using LED panels over handheld LED devices for full-body or large-area light therapy?
Answer: LED panels deliver uniform irradiance over a large surface area simultaneously, reducing treatment time
Full-body LED panels allow simultaneous, consistent light delivery across large treatment areas, making them more efficient than sequential handheld device application.
What does 'thermal relaxation time' (TRT) mean and why is it important in pulsed light therapy?
Answer: The time a chromophore takes to dissipate absorbed heat; pulse duration should match TRT for selective targeting
Matching laser/IPL pulse duration to the target's thermal relaxation time ensures heat is confined to the target chromophore before it can diffuse to surrounding tissue.
What routine maintenance task is critical for contact light therapy applicators between clients?
Answer: Cleaning and disinfecting applicator surfaces with an appropriate EPA-registered disinfectant
Contact applicators that touch client skin must be disinfected between uses to prevent cross-contamination and transmission of pathogens.
Which parameter setting on an IPL device primarily determines which skin chromophore (pigment vs. vessel) is targeted?
Answer: The cut-off filter (wavelength range) selected for the treatment
Cut-off filters on IPL devices block lower wavelengths and allow higher wavelengths to pass, selecting chromophore targets—lower wavelengths for pigment and vessels, higher for deeper structures.
What is a 'test patch' or 'test spot' and when is it performed before light therapy treatment?
Answer: A small-area trial treatment to assess individual skin response and optimize settings before treating the full area
A test patch is performed on a small, inconspicuous area with planned treatment parameters to evaluate client skin response and verify safe, effective settings before full treatment.
Why should metallic jewelry and accessories be removed from the treatment area before light therapy?
Answer: Metal reflects or concentrates light, potentially causing localized burns or unintended tissue heating
Metal surfaces can reflect laser or intense light beams, creating unpredictable focal points that may cause thermal burns to the client or surrounding personnel.