Photodynamic Therapy (PDT) is a medical treatment that utilizes light-sensitive compounds, known as photosensitizers, in combination with light to produce cytotoxic species that can kill cancer cells, bacteria, and other pathogens. The therapy involves three main components: a photosensitizer, light of a specific wavelength, and oxygen. When the photosensitizer is exposed to light, it undergoes a series of photochemical reactions that generate reactive oxygen species (ROS), such as singlet oxygen and free radicals, which induce cell death.
