The Lancaster and Barraquer are examples of which type of surgical instrument?

The Lancaster and Barraquer instruments are specifically designed eyelid speculums used during ophthalmic procedures. Eyelid speculums are vital surgical tools that allow for proper exposure of the eyelids and the underlying structures of the eye, facilitating various surgical techniques.

The Lancaster speculum is designed in a way that it holds the eyelids widely apart, providing excellent visibility for the surgeon to perform delicate eye surgery. Similarly, the Barraquer speculum has a unique design that provides adjustable tension to accommodate different patient anatomies and surgical needs.

Both instruments exemplify how specialized tools can enhance the surgical workflow by improving access and visibility during eye surgeries, a crucial aspect in ensuring patient safety and optimal surgical outcomes. Other choices, such as surgical scissors, suture needles, and forceps, serve different functions and are used for tasks other than eyelid retraction and exposure.