What potential effects can laser exposure have on human tissue?

Laser exposure can lead to a range of effects on human tissue due to the way lasers interact with biological materials. The correct answer encompasses several potential outcomes:

• Thermal damage occurs when the laser's energy is absorbed by tissue, generating heat that can destroy cells or alter tissue structure. This is a significant concern with high-powered lasers, where excessive heat can cause burns and even charring of tissues.

• Photochemical damage refers to alterations at a molecular or cellular level caused by the laser's specific wavelengths. Certain lasers can initiate chemical reactions in tissues, potentially leading to cell death or changes in cellular functions.

• Secondary injuries may arise as a consequence of primary damage, including inflammation or an immune response initiated by tissue injury. This can complicate recovery and lead to further complications beyond the initial exposure.

Understanding these effects is crucial for safely using lasers in medical and cosmetic procedures, as well as for minimizing risks to patients. The other options presented do not comprehensively capture the complexities of laser-tissue interactions and their potential consequences. While minor cuts and visible burns are possible, they do not reflect the full range of effects that can result from laser exposure.