Lasertissue

Lasertissue refers to the interaction between laser light and biological tissue. This interaction can lead to various effects depending on the laser's wavelength, power, duration, and the specific optical and thermal properties of the tissue. Lasers can be used to cut, ablate (remove material layer by layer), coagulate (seal blood vessels), or stimulate cellular processes within the tissue.

The primary mechanisms of laser-tissue interaction include absorption, scattering, and reflection of light. Absorption by chromophores within the tissue, such as water or melanin, is crucial for energy transfer. This absorbed energy can then be converted into heat, leading to thermal effects like coagulation or vaporization. Non-thermal effects, such as photochemical reactions or photoacoustic waves, can also occur under specific laser parameters.

Applications of lasertissue interaction are widespread in medicine. In surgery, lasers are used for precise cutting and removal of tissue with minimal bleeding, as seen in ophthalmology for refractive surgery or in dermatology for lesion removal. They are also employed in photodynamic therapy, where a photosensitizing drug is activated by laser light to destroy cancer cells. Research continues to explore new wavelengths and techniques to optimize these interactions for therapeutic and diagnostic purposes. Understanding these principles is vital for safe and effective use of lasers in biomedical fields.