This article contains content about features that are unused, but are still in the current code.
These features may only be obtainable through commands, or even only mods.
Blindness is a status effect that affects a player's vision. Blindness reduces the distance a player can see, potentially making them more vulnerable to mobs. This Status Effect only affects a player's vision. The sun and moon will still be visible. When combined with a Potion of Night Vision, a player will see everything in a sheet of fog that will fade away when the condition dissipates.

Like most status effects, it can be removed by drinking Milk.

Sources of Blindness