Valoherkkään

Valoherkkään is a Finnish term that translates to "light-sensitive" in English. It is primarily used to describe individuals or objects that exhibit an exaggerated or uncomfortable reaction to light. In the context of human physiology, valoherkkään refers to photophobia, a condition where exposure to light causes pain or discomfort in the eyes. This can manifest as a need to squint, close the eyes, or shield them from even normal levels of illumination. Photophobia can be a symptom of various underlying medical conditions, including eye infections, migraines, or certain neurological disorders.

The term can also be applied more broadly to describe the sensitivity of materials or equipment to light. For example, certain photographic films or digital sensors are described as valoherkkään if they are highly sensitive to light, meaning they can capture images with less light exposure. Conversely, materials that are not easily affected by light might be described as not valoherkkään. In a botanical context, a plant might be considered valoherkkään if it requires a specific amount of light or is easily damaged by excessive sunlight. Therefore, valoherkkään encompasses a range of sensitivities to light across different domains.