Practice Test Geeks(CLT) Certified Laser Technician Practice Test
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Skin Anatomy & Treatment Selection 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 Skin Anatomy & Treatment Selection flashcards as text

  1. Rosacea subtypes influence laser treatment selection. For a patient with primarily erythematotelangiectatic rosacea, which treatment is most appropriate?

    Answer: Pulsed dye laser (PDL) or KTP laser

    Pulsed dye laser and KTP lasers target oxyhemoglobin in superficial vessels, making them ideal for the diffuse redness and telangiectasias of ETR subtype.

  2. What is the primary significance of the Fitzpatrick skin type classification system for laser technicians?

    Answer: Predicting how skin will respond to UV radiation and guiding laser parameter selection

    The Fitzpatrick scale classifies skin by melanin content and UV response, directly guiding laser wavelength, fluence, and cooling choices to minimize complications.

  3. A patient has a port-wine stain (nevus flammeus). Which laser is considered the gold standard treatment for this vascular birthmark?

    Answer: Pulsed dye laser 585–595 nm

    The pulsed dye laser at 585–595 nm selectively targets oxyhemoglobin in the ectatic capillaries of port-wine stains with minimal scarring risk.

  4. Dermal fibroblasts play a critical role in laser skin rejuvenation because they:

    Answer: Produce collagen and extracellular matrix components in response to controlled thermal injury

    Fibroblasts in the dermis respond to controlled laser-induced thermal injury by synthesizing new collagen and remodeling the extracellular matrix.

  5. Which of the following is the most appropriate cooling method to use with a diode 810 nm laser during hair removal to protect the epidermis?

    Answer: Contact cooling via sapphire tip or cryogen spray cooling before/during the pulse

    Contact sapphire cooling or cryogen spray applied before and during the laser pulse actively protects epidermal melanin from thermal damage.

  6. A patient with a history of hypertrophic scarring wants fractional CO2 resurfacing. What is the most appropriate course of action?

    Answer: Discuss the increased risk, consider a test spot, and treat conservatively if proceeding

    Patients with hypertrophic scar history have increased scarring risk; informed consent, test spots, and conservative settings are mandatory before full treatment.

  7. The concept of 'fluence' in laser treatments refers to:

    Answer: The energy delivered per unit area, expressed in J/cm²

    Fluence (energy density) is the total laser energy delivered per unit area (J/cm²) and is a primary determinant of treatment efficacy and safety.