A client is diagnosed with glaucoma. The provider needs to determine if it is open-angle glaucoma or closed-angle glaucoma. What test does the nurse anticipate?
Correct Answer: B
Rationale: Gonioscopy is the appropriate test to anticipate in this scenario. It is used to distinguish between open-angle and closed-angle glaucoma by examining the angle where the iris meets the cornea. Choice A, ultrasonic imaging, is not typically used to differentiate between these types of glaucoma. Choice C, corneal staining, is used to detect corneal abrasions and defects, not to differentiate between types of glaucoma. Choice D, electroretinography, is a test that measures the electrical responses of various cell types in the retina and is not specific to differentiating between open-angle and closed-angle glaucoma.