A nurse is caring for a client who has a cloudy, opaque area over the lens of one eye.
The nurse should identify that this is a manifestation of which of the following visual impairments?

This is a responsibility of the nurse in the process of informed consent, which is the patient’s choice to have a treatment or procedure based on their full understanding of its benefits, risks, and alternatives. The nurse should provide written materials in the client’s spoken language, when possible, and verify that the client comprehends and consents to the care and procedures.

Choice A is wrong because confirming that the client is competent to sign for the procedure is not a responsibility of the nurse, but of the health professional who directs the care. The nurse can only obtain consent when initiating care or reviewing consent before providing care ordered by another health professional.

Choice B is wrong because discussing the risks of the procedure with the client is not a responsibility of the nurse, but of the health professional who directs the care. The nurse can only inform the client about what will occur during the procedure and answer any questions they may have.

Choice D is wrong because explaining alternatives to the procedure to the client is not a responsibility of the nurse, but of the health professional who directs the care. The nurse can only inform the client about what will occur during the procedure and answer any questions they may have.

One of the highest levels of evidence are randomized, controlled, double-blind studies. This is because these studies reduce the risk of bias and confounding factors by randomly assigning participants to intervention or control groups, blinding the participants and researchers to the group allocation, and using a placebo or standard treatment as a comparison.

Choice B is wrong because ideas, editorials, and opinions are considered low levels of evidence as they are based on personal views and not on rigorous research methods.

Choice C is wrong because the purpose of the hierarchy of evidence is to help the nurse evaluate the quality and strength of the research findings, not to compare patient values with research findings.

Patient values are important for evidence-based practice, but they are not part of the hierarchy of evidence.

Choice D is wrong because all forms of evidence should not be considered equally when determining evidence-based practice. The hierarchy of evidence ranks different types of research designs according to their validity and applicability, and the nurse should use the highest level of evidence available for their clinical question.