An instrument known as a microkeratome is used in which procedure?

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Prepare for the Certified Paraoptometric Assistant (CPOA) Exam. Study with extensive flashcards and multiple choice questions with explanations. Enhance your skills and knowledge to succeed.

Multiple Choice

An instrument known as a microkeratome is used in which procedure?

Explanation:
In LASIK, a microkeratome is used to create a thin, precise corneal flap. The blade slices a hinged flap from the front surface of the cornea, which is then lifted away so the underlying stromal tissue can be reshaped with an excimer laser. After reshaping, the flap is laid back into place to heal. The other procedures don’t involve making a corneal flap with a blade: penetrating keratoplasty replaces the full thickness of the cornea with donor tissue, pneumatic retinopexy treats retinal detachment with a gas bubble and laser/cryotherapy, and phacoemulsification uses ultrasonic energy to break up and remove the natural lens during cataract surgery.

In LASIK, a microkeratome is used to create a thin, precise corneal flap. The blade slices a hinged flap from the front surface of the cornea, which is then lifted away so the underlying stromal tissue can be reshaped with an excimer laser. After reshaping, the flap is laid back into place to heal. The other procedures don’t involve making a corneal flap with a blade: penetrating keratoplasty replaces the full thickness of the cornea with donor tissue, pneumatic retinopexy treats retinal detachment with a gas bubble and laser/cryotherapy, and phacoemulsification uses ultrasonic energy to break up and remove the natural lens during cataract surgery.

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