What is the primary distinction between continuous wave and pulsed laser output in laser therapy?

The primary distinction between continuous wave and pulsed laser output in laser therapy lies in the nature of the beam. Continuous wave output maintains a constant beam of laser light, providing a steady and uninterrupted flow of energy. This allows for ongoing tissue interaction and can achieve deeper penetration into tissues without interruption.

In contrast, pulsed output involves the emission of laser energy in short bursts or pulses. This method can offer advantages such as reduced thermal buildup in the treated area, allowing for specific targeting of tissues and potentially minimizing damage to surrounding structures.

The other choices present misunderstandings about the characteristics of these laser outputs. Continuous wave does not provide varying intensity; rather, it offers a consistent intensity. Pulsed output does not deliver a consistent beam; it is characterized by its intermittent bursts. Lastly, while pulsed output can be beneficial for various applications including skin lesions, that characteristic does not define the fundamental difference between the two types of outputs. Therefore, the correct understanding centers on the fact that continuous wave laser therapy delivers a constant beam.