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

Question

Quizplus · Accepted Answer

A-scan ultrasound is commonly used to determine the power requirement for lens replacement in cataract surgery. It measures the distance between the cornea and the retina to calculate the correct strength of the intraocular lens implant that will be used to replace the natural lens.

A Nurse Is Assisting with an A-Scan Ultrasound Procedure