Oculus

Broadly speaking, an Oculus is a Magic Item or device that enhances a user's eyesight and visual perception. 
Oculi are famously difficult to produce, and many artificers see the fabrication of a functional Oculus as a sign that a student of artifice has become a master.
Because of their considerable rarity and expense, most Oculi are used to replace missing eyes, rather than supplementing or improving existing eyesight.
Category:Magic items