CLT Therapeutic Laser Applications 3

Question 1

Which laser classification poses the highest risk of ocular injury during therapeutic use?

Accepted Answer

Class 3B

Answer

Class 3B lasers can cause immediate eye injury from direct or specularly reflected beams and require protective eyewear during use.

Question 2

A therapist is treating trigger points in the upper trapezius. What technique best targets a discrete myofascial trigger point?

Accepted Answer

Stationary contact probe directly on the trigger point

Answer

A stationary contact probe placed directly on the trigger point allows concentrated energy delivery to the focal point of dysfunction.

Question 3

How does therapeutic laser reduce pain through neurological mechanisms?

Accepted Answer

By decreasing nerve conduction velocity and altering neuropeptide release

Answer

Photobiomodulation decreases nerve conduction velocity in small-diameter pain fibers and modulates release of substance P and other neuropeptides.

Question 4

When calculating treatment time, a therapist knows the device outputs 500 mW and the target fluence is 4 J/cm² over 10 cm². What is the required treatment time?

Accepted Answer

80 seconds

Answer

Total energy needed = 4 J/cm² × 10 cm² = 40 J; time = 40 J ÷ 0.5 W = 80 seconds.

Question 5

Which condition has the strongest evidence base for therapeutic laser efficacy according to current research?

Accepted Answer

Neck pain and musculoskeletal disorders

Answer

Neck pain and musculoskeletal conditions have the most robust clinical evidence supporting therapeutic laser effectiveness.

(CLT) Certified Laser Therapist Practice Test

(CLT) Certified Laser Therapist Practice Test

CLT Therapeutic Laser Applications 3