Which of the following instruments is specifically used for eye surgery?

The Barraquer Eye Speculum is specifically designed for eye surgery, making it the correct answer. This instrument is utilized to hold the eyelids open during various ophthalmic procedures, allowing for better access and visibility to the surgical area. Its shape and design are tailored to comfortably and securely maintain the position of the eyelids without causing additional trauma to the eye or surrounding tissues.

In contrast, the other instruments mentioned serve different surgical purposes. Pin cutters are generally used for cutting wire or pins in orthopedic procedures. Colibri forceps are fine-tipped, delicate forceps used mainly in procedures requiring precise manipulation of small tissues, but not specifically for positioning the eyelids in eye surgery. Lastly, the Friedman Rongeur is a type of surgical instrument used primarily to remove bone or tissue, typically in orthopedic or neurosurgical contexts, rather than in ophthalmology.