Which instrument is used to remove a corneal foreign body?

• A. Bailey's loop
• B. A bent 20-gauge hypodermic needle
• C. Spud
• D. All of the above

Answer: (D)

Removing a corneal foreign body is about lifting or scooping the object off the surface without harming the cornea, and several tools can accomplish this depending on the situation. The Bailey’s loop lets you hook and lift a superficial particle from the surface. A bent 20-gauge hypodermic needle provides a precise angle to slip under and lift the object with careful control. A spud, being a blunt scooping instrument, can sweep under and dislodge the foreign body. Because different depths and positions require different approaches, any of these instruments can be used, so “All of the above” is the best answer.