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**[[Hub]] / [[References]] / [[TTRPG System Terms]] / [[Common Terms]]**
# Vision and Light
The most fundamental tasks of adventuring – noticing danger, finding hidden objects, hitting an enemy in combat, and targeting a spell, to name just a few – rely heavily on a character's ability to see. [Darkness](Darkness.md) and other effects that obscure vision can prove a significant hindrance. A given area might be [Lightly](Lightly%20Obscured.md) or [Heavily Obscured](Heavily%20Obscured.md).
- In a [Lightly Obscured](Lightly%20Obscured.md) area, such as [Dim Light](Dim%20Light.md), patchy fog, or moderate foliage, creatures have disadvantage on Wisdom (Perception) checks that rely on sight.
- A [Heavily Obscured](Heavily%20Obscured.md) area, such as darkness, opaque fog, or dense foliage, blocks vision entirely. A creature effectively suffers from the [Blinded (C)](Blinded%20(C).md) condition when trying to see something in that area.
The presence or absence of light in an environment creates three categories of illumination: [Bright Light](Bright%20Light.md), [Dim Light](Dim%20Light.md), and [Darkness](Darkness.md).
- [Bright Light](Bright%20Light.md) lets most creatures see normally. Even gloomy days provide [Bright Light](Bright%20Light.md), as do torches, lanterns, fires, and other sources of illumination within a specific radius.
- [Dim Light](Dim%20Light.md), also called shadows, creates a [Lightly Obscured](Lightly%20Obscured.md) area. An area of [Dim Light](Dim%20Light.md) is usually a boundary between a source of [Bright Light](Bright%20Light.md), such as a torch, and surrounding darkness. The soft light of twilight and dawn also counts as [Dim Light](Dim%20Light.md). A particularly brilliant full moon might bathe the land in [Dim Light](Dim%20Light.md).
- [Darkness](Darkness.md) creates a [heavily obscured](Heavily%20Obscured.md) area. Characters face darkness outdoors at night (even on most moonlit nights), within the confines of an unlit dungeon or a subterranean vault, or in an area of magical darkness.
### Vision Types
- [Blindsight](Blindsight.md)
- [Darkvision](Help%20&%20References/TTRPG%20System%20Terms/Common%20Terms/Vision/Darkvision.md)
- [Truesight](Truesight.md)