Eyepatch
Type
Cost
2 sp
Weight
-
Eyepatches can be used to prepare one eye for lower light vision, especially for working on deck and in the relative darkness of a ship. When you are wearing an eyepatch and enter an area of darkness or dim light from a brightly lit area, you can use a bonus action to swap it from one eye to the other to gain an expertise die on Perception checks until you enter an area of bright light or for the next 10 minutes.
Source