A Nurse Is Assisting with an A-Scan Ultrasound Procedure

Multiple Choice

A nurse is assisting with an A-scan ultrasound procedure.This test is most commonly used to do which of the following?

A) To differentiate between open-angle and angle-closure glaucoma
B) To detect conjunctival and corneal injuries by foreign bodies
C) To determine the power requirement for lens replacement in cataract surgery
D) To assess adequacy of tearing for contact lens comfort and for successful LASIK surgery