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Which instrument is used during a keratoplasty?

• A. #11 knife blade
• B. Sphenoidal punch
• C. Westcott scissors
• D. Corneal trephine

1 Answer

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Final answer:

During a keratoplasty, a corneal trephine is used to cut a precise, circular area of the cornea to replace damaged tissue with donor tissue.

Step-by-step explanation:

The instrument used during a keratoplasty, which is a surgical procedure to replace part of the cornea with corneal tissue from a donor, is the D. Corneal trephine. This specialized instrument is designed to cut a precise, circular area of the corneal tissue. The other instruments listed, such as the #11 knife blade, Sphenoidal punch, and Westcott scissors, have different specific uses in surgery but are not the primary tools for performing the corneal cut in a keratoplasty.

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