Eyepatch
An eyepatch was a small pad that was often worn to cover a lost or damaged eye.

Klingon General  wore an eyepatch over his left eye until his death in 2293. ()

In Doctor Julian Bashir's holoprogram Julian Bashir, Secret Agent,  the character of Falcon wore a patch, with the image of a falcon's head on it, over his left eye. After a transporter accident in 2372, Chief Miles O'Brien assumed Falcon's identity, including eye patch. ()

In 2373, during an away mission on the Takarian homeworld, Commander Chakotay and  Tom Paris met a Takarian bard who wore an eyepatch. The bard, who often sang the Song of the Sages, wore it to elicit sympathy claiming he needed money in order to buy ointment for his eye. His ruse was discovered when Lieutenant Paris saw that his patch had changed places during a second meeting. ()

In 2381, Thadiun Okona wore an eyepatch over his left eye while performing as a DJ at the Command Conference afterparty on Starbase 25. ()

Jean-Luc Picard donned an eyepatch as part of an "appropriately sinister" disguise on a mission to Freecloud. ()

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Clothing accessories