Fotosenzitivní

Fotosenzitivní is a Czech adjective meaning photosensitive. It describes a substance, organism, or part of an organism that is sensitive to light. This sensitivity can manifest in various ways.

In chemistry, photosensitive materials are those that undergo a chemical change when exposed to light. This property is utilized in photography, where light-sensitive emulsions on film or paper react to form an image. Photolithography, a process used in semiconductor manufacturing, also relies on photosensitive materials.

In biology, photosensitivity can refer to the ability of organisms to detect light. Plants, for instance, are photosensitive and use light for photosynthesis. Many animals have eyes or other light-sensing organs to navigate their environment, find food, or avoid predators. Some organisms, like certain bacteria or fungi, can also exhibit phototaxis, meaning they move towards or away from a light source.

In medicine, photosensitivity can refer to an exaggerated reaction of the skin to sunlight. This can be caused by certain medications, medical conditions, or inherited disorders. Exposure to UV radiation can trigger symptoms like rashes, itching, or even blistering. In a more general sense, it can also describe the increased sensitivity of the eyes to light, often associated with certain eye conditions or after specific medical procedures.