What three things inhibit the effectiveness of photons in laser therapy?

In laser therapy, the effectiveness of photons is significantly influenced by their interaction with biological tissues. The correct choice identifies reflection, absorption, and scatter as the three main factors that inhibit the effectiveness of photons.

Reflection occurs when photons encounter tissue surfaces that do not allow them to penetrate, causing them to bounce back instead of being absorbed. This reduces the overall number of photons that can enter the tissue and contribute to therapeutic effects.

Absorption refers to the process where photons are taken up by the tissue. This is a crucial element of laser therapy, as specific tissues absorb light at different wavelengths; therefore, when light is absorbed, it contributes to the therapeutic effects, such as promoting healing or reducing inflammation. However, excessive absorption can limit the penetration depth and impact the overall effectiveness.

Scatter involves the dispersion of photons in various directions as they pass through tissues. This scattering diminishes the concentration of photons reaching the target area, reducing the treatment's effectiveness.

The other options include factors such as refraction, transmission, and deviation, which are less relevant in the context of inhibiting the effectiveness of laser therapy. Understanding how reflection, absorption, and scatter impact the delivery of photons is essential for optimizing laser therapy outcomes.